I just reread The Godfather and loved it once again. What a great book. Fun, interesting, a page-turner. Yes, the Johnny Fontane section threw me the first time, and it still felt unneeded the second time. Maybe it’s that this section throws you a bit out of the story.
It really throws me. The other thing that throws me is when they overuse the word had. When it’s in every sentence or even appears in a sentence more than once.