>>1889875They don't always collab together. They were all invited by Noble to do this, because Noble knows Melody and Mousey (and Nagzz) and then asked Nyanners to join (or had Mel and Mouse ask her).
Mousey will collab with anybody, really. She does Dark Souls with Nyan, and is now doing at least two collabs with Hime. In the past Mousey has done a lot with Silver and Zen, too. Melody is probably Mouseys' best friend so they do a lot together. The only one that Mousey hasn't done a lot with is Froot beyond the big group collabs. She also has done collabs with Connor and wants to collab with Nijisanji people (and HL people but that's out).
Nyan generally collabs with Mousey and Veibae but doesn't do a lot of other collabs. Probably because she's a social retard, but also because she's got her own plans for things and only goes outside of those when her normal stream times aren't happening.
Melody has actually not been doing a ton lately period, and I think it has to do with her upgrades she's trying to do. Even CB is cut down. Normally Mel will collab with just about anybody in the group but has a large circle of friends.
So they don't exclusively collab together, but they do a lot that's true. SIlver is the one who has been not doing a lot of collabs lately beyond with her own mother. Part of that was her working on her tracking upgrades and the other part is she streams really late at night. Froot and Zen collab together often, and Zen also collabs with just about anybody (regularly with Bunny and Momo).