What i mean to say is that he survives the apocalypse and then he kills regina after the apocalypse (2020) and in the last episode we came to know that it was claudia who told him to kill regina(2050's).....but how the ffffff did he survive till 2050's that too without ageing(he looked the same in both timelines 2020 and 2050's) and how did he travel back to 2020 to kill regina????????did he travel with claudia or what? Can someone please explain this??