Imagine the 10 hours of LOTR packed into one film. It would be utter chaos
. I also think the reason the trilogy does gel together so well is how they filmed it (vast majority of the material all at once). You get little things that don’t quite match up on a film/post production/release/reception/film sequel basis. It was sort of trail blazing in a way. E.g. there’s no way the MCU could have come together without a release schedule of movies stretching several years.