How did Captain America did not change the timeline?

Back when Avengers: Endgame came out, writers Christopher Markus and Stephen McFeely revealed that in their opinion, there was no alternate timeline – Cap lived his life quietly in the main timeline: So people are asking… So Steve going back and just being there would not create a new timeline.

Why did Captain America age in Avengers: Endgame isn’t he supposed to be ageless like Bucky?

They were both cryonically frozen (presumably a normal person would have just been frozen to death, but their super serum enhanced physical abilities let them survive where their metabolisms were essentially zero and thus no ageing took place while Cap was in ice and Bucky in the Soviet Hydra cryo tubes.

Is Captain America’s endgame ending a plot hole?

Captain America’s Avengers: Endgame ending is not a plot hole. In the MCU culmination, the Avengers use time travel to pluck the Infinity Stones (destroyed in the present) out of previous Marvel movies so they can undo the effects of Thanos’ snap.

What happened to Steve Rogers in the MCU?

Bucky and Sam Wilson are waiting for Captain America to return, but instead, they find an old version of Steve Rogers sitting on a bench nearby. We learn that Steve stayed in the past and lived out his life in peace with Peggy Carter before ending up back at that exact spot as an old man.

What happened to Thanos in the MCU?

In the MCU culmination, the Avengers use time travel to pluck the Infinity Stones (destroyed in the present) out of previous Marvel movies so they can undo the effects of Thanos’ snap. That leads to at least one new timeline by Loki, a bizarre time loop where Thanos disappears in 2014, and a lot of confused fans.

Can Captain America create a timeline branch?

That means that there can be no questions over Captain America creating a timeline branch by returning to the past and taking back his happy ending with Peggy Carter. It’s now set in stone as protected by the TVA, thanks to Loki. So too is the fact that Gamora stayed in the Sacred Timeline despite being a variant after her Infinity War death.