Quote Originally Posted by Dasquian Belargic View Post
Thinking about this episode this morning was hurting my brain because I was trying to apply time-travel logic to it and boggling over how Eleven and Ten could both possibly experience something for the first time, together, without breaking the universe
The two most convenient ways to accomplish this are partial memory wipe after it's all over and having them very frequently off doing different things so that they relive the same day from different perspectives. I'm pretty sure there are others I can't think of, but those two would be the ones I'd probably do if I were in the writer's chair.