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You should be able to. I have multiple Google home speakers throughout the house and I am able to tell it to play things on the TV. I believe you can also now create a speaker group which can now include the TV, where you'd be able to play on all of them at the same time.
Sorry, there was a problem. Please try again later.You can create a speaker group for your Nest Audio and Chromecast with Google TV. Take a look at this link for more info: https://support.google.com/googlenest/answer/7174267
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