Talk about surviving an almighty scare.
It was perhaps on-brand in these strange times at Celtic that Nancy's first victory was earned in the most uneasy way imaginable.
For long enough, it should have been the most straight-shooting, up-the-road-for-Christmas win, such was their relentless attack.
Veteran Sportsound pundits Pat Bonner and Willie Miller, who have played and witnessed more games than any of us could imagine, were not using the words, "We've never seen anything like this" lightly.
Thirty-one shots on goal, 10 on target and an xG of 4.53 - Celtic should have been out of sight.
When they were pegged back, there was real concern this was going to be another nightmare before Christmas.
And while that profligacy could not be left at the door of Nancy, how the Frenchman would be able to continue after such a calamity would have been of grave concern.
The win itself far from drags him - and Celtic - out of the woods but the overall performance should help. It's easy to lose sight of it in all these bewildering numbers but the champions were very easy on the eye.
While Aberdeen didn't put them under much pressure, they had sustained success in comparison to the small spells of special stuff during the four proceeding defeats.
Nancy will be able to enjoy Christmas a little bit more now - but he ought to aware this first win will far from have wiped out the doubts of many.
