You're certainly right. All Tarkovsky's films are astonishingly boring. It takes a lot to be able to appreciate that sort of film. Learning to enjoy boredom is one of the greatest things I've developed in my life. It's like a superpower, it enables me to read vast quantities of dry but wonderful nonfiction, for example. I wish I had developed this power decades ago, but maybe that wouldn't have been possible without the necessary life experience.