10 Recent Movie Moments That Made No Sense

Time travel storylines are always tricky, because unless they are 100% watertight, there will be at least some kind of plot hole, inconsistency, or rule break found. Unfortunately, very rarely are these stories 100% watertight, and Avengers: Endgame is no exception to this.

During the time heist, Hulk tried to explain time travel rules as they exist in the MCU, and in all honesty did a pretty poor job of it. Audiences and characters alike ended up more confused than they were before, and this wasn't helped by one of the final scenes in the entire film.

Essentially, going back to the past doesn't change anything in that timeline, it instead branches out and creates a completely new timeline. So the time heist didn't change anything in their reality, but instead created a new and separate reality in which they could defeat Thanos. Hulk himself said so.

With that in mind then, when Steve went back in time to return the Infinity Stones and live his life with Peggy, that should have been in a separate timeline. Old Man Steve shouldn't have been able to sit and meet the people from his old life decades in the future because he should have been in a different timeline. Instead, what he did was go back to the past and change the future, which is something that Banner specifically said he couldn't do.