Quote Originally Posted by ForteCross View Post
there is a timeout for the fusion of about 30 minutes which is definitely not enough for a season finale xD...
Eh, it's plenty. Gogeta just needs to by enough time for Bulma to go back in time, get the tags for the Mafuba jar, and come back. And then right after the fusion runs out and Zamasu is about to kill them, Trunks Mafuba's him into the jar.

I mean, he's still immortal, so even if Vegeto can kick his ass, it's not going to solve the problem.