Well, that was a real treat for a Tuesday evening, wasn't it?

Four sublime goals...

A couple of close calls...

And some controversial decisions...

All you could want in a Champions League knockout match.

Let's hope tomorrow brings the same amount of drama! We'll be back to bring you Manchester United's first leg against Bayern Munich, which kicks off at 20:00 GMT.

See you then!

Nikita Parris
London City Lionesses forward on BBC Two

On Chelsea having to turn around a two-goal deficit:

It's not going to be easy but I think Chelsea's whole game and frustration was summed up in the manager. You could see she cut a frustrated figure all night.

Ellen White
Former England striker on BBC Two

Sonia Bompastor has to remain calm. Chelsea are still in this tie.

They've done it before. They did it last season against Manchester City.

They've got the players and talent - it is just about it all coming together and it coming to fruition.

They do need that number nine though. Hopefully Sam Kerr will be available and she'd be a great addition. It would mean that Lauren James doesn't have to play that false nine role and she is better when she's free and allowed to roam and Chelsea have a focal point.

Chelsea

Chelsea defender Lucy Bronze speaking to BBC Sport: "Frustrating. I think we did enough to get something to take back to Stamford Bridge. It was a good game. Both teams had spells in the game. In their spells they got the goals. We got the goals but they were ruled out. It's frustrating from that point of view.

On the refereeing decisions: "Particularly on the goal that Veerle [Buurman] scored, but I feel like we were quite good at moving on and carrying on. People are saying they want VAR in the game and we still have ambiguous decisions."

On confidence to turn it around in the second leg: "We know we can go to Stamford Bridge and turn this result around. We did it last year against [Manchester] City so there's no reason we cant do it again.

"We've got big players with big personalities who have been in this position before, who know how to win games.

"We know we've got it in us. Some players are coming back from Asian Cup as well so that's strengthening the squad again so that will put us in an even better position."

Nikita Parris
London City Lionesses forward on BBC Two

There will be a different gameplan for Chelsea next week.

She wasn't able to change the players or game the formation today because of injuries and players just getting back from the Asia Cup.

Players like Ellie Carpenter and Sam Kerr will be back in and that means they can put more impetus on attacking.

Aresnal boss Renee Slegers talking to BBC Sport: "The game was very tight today. We both had our moments. We were clinical and ruthless with our chances. There were different momentum shifts - they started really well and we stayed in the game. It was gritty at times, there were duels, there is very little time and space in the central areas. It was hard at times. It was tight in individual duels, but I am very pleased with the squad from start to finish and how we managed the game. The mentality mostly because staying I the game and stayed task-focused was key and the players did that today."

On the goals her side scored: "They were all great goals. It was a variety of goalscorers and type of goals and we like that. That is what we’re about. We want to be unpredictable so I’m happy about that."

On enjoying the moment: "Definitely. You have to be happy in these moments because we put on a good, gritty performance. We are now getting ready for the north London derby. We are getting ready for that game."

On the statement they made tonight: "We’ll see. It’s only half-time. Chelsea will analyse this game and do something at Stamford Bridge. It was tight and we have to be on our toes. There is no statement yet."

Ellen White
Former England striker on BBC Two

On Chelsea's disallowed goal in the first half...

When you only go in one goal down, it completely changes the whole conversation and team talk. You've got that confidence and momentum and something to hold onto. But having that taken away really took them back.

The reaction was massive in the second half. They came out front-footed.

Arsenal soaked up a lot of that pressure and performed very well in the second half too.

Steph Houghton
Former England captain on BBC Radio 5 Live

Chelsea will be really disappointed with that decision just before half time but in terms of the overall game, Arsenal created better chances.

Alessia Russo's goal was a half chance but she took it so sweetly on the half volley. A great game of football but Arsenal should be happy. Chelsea will have players coming back and that makes it more interesting.

Last year's run for Arsenal was so special for the club and nobody expected them to get to the final. When you are the underdog you have that different mentality but this season fair play to Arsenal, they have come through this competition and performed well.

Arsenal have been a bit disappointing in the league so I think they are really focused on the Champions League.

On Chelsea's first disallowed goal:

It's a really soft decision. We have spoken so much of VAR in the men's game and now it's creeping into the women's game. They are there to do a job and they have not done it.

Football is a contact sport, we keep forgetting about that and VAR is really spoiling it. It really annoyed me for Chelsea as it could've been a different game at 2-1 instead of 2-0.

Chelsea

More from Sonia Bompastor on whether she was frustrated with her players: "No. We deserved more. I am proud of the players. We executed the game plan. The difference tonight was one team could score. We created a lot, we could have scored twice in the first 15 minutes. It's fine margins. When you are leading the game it is different mentally.

"We created enough to be the team who could win the game but not efficient enough. That's been a little bit the story of our season. We have two goals to come back. Our mentality and my mentality is to fight until the end of the season in every game. We are still confident, anything can happen in football and we will go again next week.

"If everyone watched the game tonight, we had a good performance as a team. We couldn't score so we need to find a way to score next week. At least twice and not concede. It will be tough because Arsenal are a very good team but everything it possible in football. My job is to make sure the players take confidence and I am really confident going into the next game knowing we will give everything."

Chelsea

Sonia Bompastor speaking to BBC Sport about whether she thought her team deserved more: "Yeah I think we can probably all say that. As a team we had a good performance. It's difficult to say that when you lose the game and concede three goals but I think we deserved better and more on the day."

On the referee's decision making: "It was not good enough. When you are playing quarter-final of the Champions League you need to have the best referees. Especially when you have the VAR. I think it's crazy the goals we got disallowed were actually good goals.

"The referee whistled before the VAR checked the decision. When you know the VAR is there, allow the goal and if the goal is not allowed because there is a fault you just disallow the goal. So I think it was not good enough.

"Maybe people will think I am saying that because I am a bad loser and we lost the game. Credit to Arsenal, they won the game and don't worry about that, that's not my main concern, but at this level it has to be a lot better."

Nikita Parris
London City Lionesses forward on BBC Two

I expect Chelsea to score goals and put on a performance, as well as a result.

However, Arsenal are used to winning in this competition. They are a very good competition team.

They will know that a two-goal advantage isn't going to get them over the line but they will know they can stop Chelsea.

They really stopped Alyssa Thompson in the second half and she was a key figure in the first.

More from Arsenal striker Alessia Russo, talking to BBC Sport about what was said at half-time: “We wanted to stay calm. We knew there were things we needed to tighten up on. 2-0 is really tough and the next goal is really important, we wanted to remain calm in and around our box and then LJ [Lauren James] scored an incredible goal and it was about getting momentum back in to the game. We want to be a bit more dominant on the ball at times but overall it was a good night.”

On the second leg and what they will need to do better: “We want to be better on the ball. We definitely know that with two goals it can change in an instant. It is nowhere near done. We’ll have to prepare really well and see what we can improve on from this game. They came out really well and we’ll need to settle that. We know the tie is nowhere near done.”

On switching between playing the number 10 and 9 roles: "It is tough. You need to adapt to different things. It is fine. I had a different role throughout most of the game and defensively today with Keira Walsh too. It is a switch I have to make quite quickly but I don’t mind. I just want to be anywhere on the pitch. They both require different mindsets. I want to be as near the goal as possible but sometimes it is dropping deeper and linking a little bit more I don’t mind it too."

Alessia Russo talking to BBC Sport about her goal: “I can’t really remember it to be honest! I remember we broke quite quickly and I tried to make a run in-between where the gaps opened up. Touch and finish, you just want to try and get something on it. It was an important goal. We settled then and saw the game out.

“I knew I had to hit it quickly because I felt someone coming. I knew I could only take one touch and hit it."

On her eight goals in this year's competition being the most by an English player in a single year: “I didn’t know that! Hopefully more goals and more wins in this competition.”

Ellen White
Former England striker on BBC Two

Arsenal are going to be full of confidence and I feel like it's such an amazing scoreline to take to Stamford Bridge. They needed a two-goal cushion, and Chelsea are going to have to come out for it now.

For Arsenal, a brilliant evening. It rained, the crowd were amazing. A phenomenal performance for Arsenal.

A reminder about the last all-English tie in the Women's Champions League - Chelsea v Manchester City in the quarter-finals last season.

Sonia Bompastor's side lost the first leg 2-0, but they overturned that deficit in the second leg and won 3-2.

It's not over 'til it's over!

Nikita Parris
London City Lionesses forward on BBC Two

On Lauren James' goal:

It's the nonchalance of it. That's the star quality Lauren James has got. And I think tonight she was the one player in that Chelsea squad that was trying to take the game by the scruff of the neck and make something happen for the team.

She stepped up with such quality. You could see in the game she was trying to make combinations in the central areas to free up space for herself and others, and you know if she got half a yard she could finish.

Ellen White
Former England striker on BBC Two

On Lauren James' goal:

Probably one of the best goals you'll ever see. Pin-point, absolutely no back-lift, calm, collected, I'm just going to take a touch wth my left foot and hit that top bins.

It's absolutely outrageous for her to even try that. She's just got that star quality. It's disappointing Chelsea couldn't go on and score another one, but it was a special one.

Fran Kirby
Brighton forward on BBC Radio 5 Live at Emirates Stadium

Image source, Reuters

Arsenal have been structured in everything they have done and ruthless when they needed to be. They are playing against a team that have a lot of qualities and managed it well.

Arsenal just turned up enough to get this crucial win going into Stamford Bridge.

If you win this tournament and beat a team like Barcelona, you feel you can beat anyone and they know how strong they are at the Emirates - they always show up for the fans and for the club. Getting this win will give them a lot of confidence going to Stamford Bridge.

There was a lot of talk about how Chelsea would manage it and it was not a perfect performance from them, there were gaps. They made it difficult for Arsenal but if Chelsea get the next goal at Stamford Bridge they are really back in this.

If Chelsea had a little bit more in the final third it could've been more dangerous.