For ME, I did not see Hanks at all. He WAS a really human Mr Rogers.
During the credits, after several folks had actually gotten up and left, a clip was played of Fred from around the late 60's would be my guess.
It was only then did I notice that Hanks didn't sound exactly like him. But his manner was spot on.
Now I think I have to go see the movie. It's been a long time since I bothered going to the theaters.