I've never seen a french defense go that long. However, I do know that caro kann is more likely to go to 100 move games than the french.
Caro has gone 197 moves. French 186. If it sounds like French is more aggressive, wait...
Caro has more shorter games than French. French has 2 of 2 moves, and 2 of 3 moves.
Caro only has 1 of 2 moves, yet 6 of 3 moves. 4 moves? 19 caro-kann 18 French.
Here Gaiwan Jones wins in 5 moves with Caro..
The French Defense is the most passive defense, so of course the Caro-Kann is the more aggressive defense. French Defense players are in for 80-move long positional games.
I've never seen a french defense go that long. However, I do know that caro kann is more likely to go to 100 move games than the french.