Not interesting.

Rating: 3/10 (19 June 2020)

At face value, it's like a long version of Forrest Gump, rebuilt as a dark and bitter stage play, with none of the interesting parts.
The first hour is so bad, it would've had to have been done like that on purpose, for an effect that isn't clear. None of the characters have any sense of emotion. Sociopaths they may be, but it's like watching a propaganda news reel from 1942. The second hour starts to offer a story, but there's no overall context or background for who is now the lead role, so it becomes Al Pacino enjoying himself yelling at stuff. In the final hour it's as if another movie starts, about a group of tired old gangsters with massive egos dying of old age, but by then no one cares and it's just pointlessly drab.
You could watch it out of curiosity, but maybe try watching it in one hour instalments unless you desperately need to fall asleep.