Personally, I think the 'Michael Corleone says hello...' line is an outright flaw in the film and always will be.
Seems to be. Fact is, anyone watching the movie for the first time would not remember that line well enough to know it is out of place anyway. I show the movie to TONS of ppl and they NEVER ask why that oddly placed line is there. I guess only freakos like us even realize it. Plus, FFC was not quite able to make the movie he wanted. In a Time Magazine interview from 1974 he said that if he had 3 more months he COULD have made a great movie.
That's why so many in here are inclined to spot the obvious flaws in the movie but take it for what it is. The Rosato's ad lib is a clear example of this shotty editing.
