great question, this is definitely messy the way I wrote it! It’s been a couple years but I think the intention was once each player has one of their two characters tracks filled, not both, so there could be survivors in either timeline. In the event that a player has expired both characters, they’d do a scene using the no characters rule on page 25.
My goal was to give a quick epilogue/cliffhanger type ending, the final shot of the Blair witch or something like that, which isn’t explored beyond its initial impact. The tape/game ends and you’re left to wonder and feel the eerie vibe.