Legend directors can bore the audience too.
I think great directors after a certain age start to make movies for their resume, not ordinary people. Excellent cast, perfect scenes, but for how long? If you are a film maker you would love this movie. Because you might see some things that ordinary people don't.
In the first 30 minutes of the movie you get the story, but you would see a lot of recursive predictable events.
And after all this 3 hours, the director wrapped things up in a way that it seemed the director was tired of filming and decided to narrate it himself.