Four Holomems Can't Stop Laughing When Falling【Hololive/Usada Pekora/Minato Aqua/Marine/Towa】 

I agree

There's no way to tell until the talents themselves decide to make it a long term thing. A good example was manjigumi which was a popular trio of Shion/Aqua/Ayame. Like the last time that group collabed was in 2020. And whether they do or not could be any number of reasons from scheduling conflicts to the community making it weird (ie PekoMiko and NoeFlare).

@@rainzerdesu Also about Pekomiko. Why don't they interact with each other? Pekora and Miko have not collabed for a long a time. Is there a reason for that? I understand that they stopped Pekomiko duo for obvious reasons but they could at least collab with each other sometime. I mean Noel and Flare still interact with each other, Kiara and Calli too. It is just strange that two most popular members have not collabed for a long a time. Even Korone and Pekora collab with each other at least one or two times per year.

@@damirturakbayev5215 See: Community being weird. NoeFlare might still interact but they have the benefit of being the same generation. Miko talked about it in a stream about how "fans" would always push hard and spread rumors about how she's actually dating whoever she's closest with (see the current MiComet and how often they emphasize "business relationship"). Just like Pekora talking about PekoMoona and how the community's insistence on shipping them made them both extremely uncomfortable collabing. Now take that weirdness and extreme discomfort and multiply it because, as you said, two of the most popular members with PekoMiko.

@@rainzerdesu I understand but Pekora and Miko could interact a little bit more. Like at least one collab in a year. For some people it just looks like these two do not get along which is not true of course. I agree with you but completely not interacting with each and not collabing with each other at all is just another extreme thing. It is kinda funny because before people shipped them and now I feel uncomfortable when they interact with each other because it feels like Pekora and Miko are complete strangers to each other.

They do this collab for 3~4 streams already. Iirc this should be their third collabs.