Managed to screw up seeing this in Omnimax 70mm by stopping for ice cream first, underestimating that St. Louis would show up. So I think it was a very fine film, but also I was halfway up, on an aisle, and couldn't tell if a ship was sinking or not (it usually was.)
The Sea and Air chapters were terrific and my only hesitation with dowsing it in holy water and crowning it with laurels is the role Kenneth Branagh plays. He's in a lesser movie. It's not especially his fault, dialogue is Nolan's Achille's Heel. But c'mon man, push back! He was like a strange Our Town narrator character, which I guess could be meta if you want.