>>49915777
Koyori and Patra talk about each other often.
Hell, her current Utawarerumono streams only happened because Patra recommended it to her so strongly.

I just haven't really heard anything about Flare and Patra in what feels like years now.
Might just be because Flare is so private but who knows, it's not like they were really talking about hanging out back when they would randomly drop in on each other's streams or show up at a 3D of the other either.