Who says they didn't?So the really odd thing, within universe, is that Rios and Raffi both have their own crews who have possibly been transported to this timeline and neither of them bother to check up on any of them at all.
I sometimes feel like the sheer volume of things fans demand be explicitly explained to them would utterly ruin a show and its pacing. Do we really need to know the details of these things, given that they don't push the narrative forward at all? Can't we just accept the story as they chose to tell it without being spoon-fed every background detail?