Hey I'm new to Stadia to and ordered myself also a second controller,... according to this YouTube tutorial it should be possible: How To Connect Multiple Google Stadia Controllers To The Chromecast...
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Hey I'm new to Stadia to and ordered myself also a second controller,... according to this YouTube tutorial it should be possible: How To Connect Multiple Google Stadia Controllers To The Chromecast Ultra!(Local Couch Coop) - YouTube