Such a poor piece of writing. 1- The exact moment??? LMAO. Impossible. At the exact moment, 2023 Post-Battle Captain America would meet the 2023 Pre-Battle Avengers stealing the Stones in the very first place! 2- You're gonna open up what? The branches have been already established, they had formed when the time-travelling Avengers entered into the past. That's it. 3- Clip all the branches? The 2014 timeline is already "compromised". Said that, you cannot delete a reality by restoring the Stones. Time travel already happened. I think the writers messed it up.