Good question – while there's no way to check w/c screens are simultaneously streaming, you can try checking all the devices that you've signed in to by going to http://accounts.google.com . You can also sign out from old/unused devices to avoid reaching the limit.
@TeamYouTube Hi there! Is there a way to see which screens are simultaneously streaming my YouTube TV account at any given time?
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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