Twitch is launching a co-streaming feature that allows streamers to combine their viewership with other channels that they are live reacting to, as long as the primary channel has the feature enabled. Unlike the Stream Together feature, it does not allow for the option of combining chats, and unlike the old Hosting feature, it allows the streamer to livestream over the primary stream and react to it
https://x.com/zachbussey/status/1978148850071437781 