So could they just go back and stop BW/HE (spoilers)
From fighting over the Soul Stone? And then bring present day BW back?
Since they already achieved their goal, they could interrupt them getting the soul stone without causing major issues time wise ... or was this what Banner was saying to Cap at the end to try and mitigate this idea - since Cap was returning the stone there anyway?
It's odd because even if she was there, he soul would also be in the stone as well?