Craig Duffy’s review published on Letterboxd:
Francis Ford Coppola fought to call this film The Godfather Part II. Up to that point in film history, sequels always had titles meant to indicate a re-hash of the first film (Another Thin Man, The Pink Panther Strikes Again, etc.) but Francis had no interesting in repeating himself. He wanted to make clear that this was the continuation of a narrative begun in the first film. An HBO series before there was an HBO. In fact, had they been around at the time, we might well have called this "The Godfather: Season 2". The season where the stakes were raised, the season where a beloved character was killed, the season of betrayal, where a good series became a great one. The failure of "season" 3 was inevitable. There's no way anyone could outdo this one, not even Coppola himself.