Bumped it up to next on my list and got around to watching this one in 2 different sittings over the weekend. My first impression is that I regret that my French isn't nearly up to snuff to follow this movie without subtitles lol.
Very intriguing film for sure. It's interesting that we the viewers, as well as the characters, don't really quite know exactly what's going on in the big scheme. I tend to have an instinct of trying to figure out what's going to happen, and I realized pretty quickly that I'd have to turn that off for this one.
I found the overall vibe of the film is pretty entrancing from the unsettling vibes, the score, and the way the story is presented throughout. Great recommendation, but could be a tough watch for a lot of people.
I did some reading on the film afterwards in an attempt to "get" it (which quickly seemed like a fool's errand) and found the comments of the Alain Resnais to be pretty interesting. An in-depth interview with him made me abandon the idea of trying to "understand" the film with any level of certainty.
Here's the interview if you're interested.
I've seen you mention it in other threads before and am glad you nudged me more to watch it. Will surely watch it again sometime in the future to see what other kind of interpretations I have.