It doesn’t really have the hallmarks of “Important” from a technical standpoint. No crane shots, very little melodrama. It could have been made by Ingmar Bergman. It’s also gripping as storytelling at three hours plus.
“Important” films start with a plodding script, and plod on through the editing that loves those pregnant pauses where you can almost hear the director telling you to think about this. It didn’t grip me for 3 hours, it bored me to tears for 3 hours.