When you come upon Rosch in Celestia and he's all beating himself up over fucking up, how is it that you repairing his arm and getting into his a head a bit somehow carries over to the alternate timeline where you'd beaten him up and salvaged his arm parts to begin with? I could've understood if he initially came to kill Eruca and you talked him out of it after the events in the alternate time, but right off the bat the conversation is totally different, changing him from loyal to Alistel to the death to basically having left them before you'd even started the chat in the cave.