So I was actually supposed to watch the 2015 Tilda Swinton movie called A Bigger Splash but watched this one accidentally.
This is another experimental 70s film. It's kind of a documentary about David Hockney, a pop artist, and his breakup with partner/muse Peter Schlesinger. There are elements that are fictionalized, flashbacks and so on, but mostly it's just following Hockney as he tries to recover his inspiration by wandering through 70s New York and southern California.
It is very meandering and even though it's barely more than an hour and a half, it feels way longer. It's a little whiny and self-indulgent for my tastes, but I do think it's an important snapshot of queer life in the 1970s from someone who isn't Andy Warhol. Probably why it's on the Criterion Channel.