restaurant scene with the waiter
When Anouk Aimee & Lean-Louis Trintignant are getting friendly in the restaurant, they have a kind of dopey "garcon" - the punch line of this scene is when JLT asks the waiter "vous avez une chambre?" He (the waiter) is uncredited as far as I can tell.
There is then ANOTHER, later film, whose name I just can't recall, where this same waiter appears; I believe he is decorating a Christmas tree, or changing a light bulb, or some other sort of mundane task, but has apparently moved up in the world to kind of innkeeper status. I also believe that JLT in is this movie as well, and even comments to him on his new, elevated status.
Kudos to you if you can name the second film - it's this sort of trivia that keeps one awake at night -
Merci a tout!