I’m slightly confused by the question but if I understand it correctly. Your asking about in the finale when they see their S6 selves?

@LR2159 Yes, I'm talking about the finale where they see them S6 selves.

And it’s the same time travel as endgame(quantum realm) so it’s not an alternate timeline unless they took something. Which if I remember correctly, they didn’t

I know but like I don't understand, who it was possible that there were 3 same people at the same time (Jemma from S6, Jemma from S7 and Jemma in space, etc)?