I was never once bored - but I realised afterwards that it does demand a different repertoire of responses to those usually sufficient for watching a film. (Actually ‘Rose of Nevada’ is the same in that sense, though a completely different type of film.)
Reviews mention the dialogue - but I’d say it’s also very much a film about looking - how things look, and how things are hidden.
(Oh, and Lori was wearing a raincoat exactly the same colour as the kagool I wore to the cinema. 😄)