There was a dedicated thread to this movie years ago.
https://forums.pelicanparts.com/off-topic-discussions/1037216-decode-once-upon-time-hollywood-me-2.html
I commented there and now feel different. Like many QT movies I need to watch them a couple times to really follow along especially Pulp Fiction. The first time I walked out of the theatre thinking what the hell did I just watch? Watched it a few more times and it became one of my QT favorites.
OUTH has grown on me as well. Like many have said it nailed the look and feel of SoCal in those years. I remember those sights enough to start recalling outdoor feel and smell. Dixie, there cannot be too much Hollywood in a move with that word in the title
Edit, Mike Moh as Bruce Lee was great but not a stand out as the entire cast did an amazing job. Still sticking to my guns with Leo the film stand out. Great performance.