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One of the Anons above mentioned they have their own circles now. But think about that who's in each circle. First the girls that aren't connected.
Miko: Polka, Mio ,Subaru, Korone
Peko: Botan, Moona, Kiara, Rushia
Now the connections:
Miko: Suisei
Peko: Towa (her and Suisei are really good friends)
Miko: NoeFure
Peko: they are her genmates and her closest friends (Noel even being someone she confides in) and adding the 3rd wheel Senchou is good friends with Miko(used to talk to her about Peko stuff).
Either way PekoMiko are still friends 100% and just decide to not stream it. There's no way Miko would be so close with all of Sankisei ( including Rushia considering Miko basically is now neighbors with Noel and Rushia) and Peko not speak to her or hate her or opposite. I think they just took their personal life off stream to stop the schizos.