Pair chromecast TV to nest audio

[Jaklo]

I have been trying to Connect my chromecast TV to mye dual speakersystem, containing 2 Nest Audio speakers. 
My Screen doesn’t have audio and I think it will be natural to connect two google devices

Note: I found a other recommend solution, but the description didn’t match my settings in the Google Home app

[Byteguy]

You will not be able to do exactly what you want to do.

You can make a speaker group, but that will only work for AUDIO services (like Spotify or YouTube Music).  It will not work for anything that involves video.

If you have the Chromecast with Google TV device (the oblong one that includes a remote) you can pair ONE of your speakers using Bluetooth.  None of the other Chromecast devices support Bluetooth, unfortunately.

[Jaklo]

So i Will be able to connect one Nest audio. It would be nice to have 2, but 1 is enough 

[Byteguy]

ONLY if you have the Chromecast with Google TV model of chromecast.

You will have to tell your Nest Audio to accept Bluetooth

https://support.google.com/googlenest/answer/7381505

And then connect it to your Chromecast with Google TV

https://support.google.com/chromecast/answer/14632555