Hello @MXCTRL
Thanks for reaching out to our Nest Community about the pair sound on your Nest Speakers. I apologize for all the inconvenience. I'm here to help you with that.
Unfortunately, there isn't a direct setting to disable the connection sound when casting audio to Google/Nest speakers. This sound is a built-in feature designed to provide auditory feedback, indicating a successful connection.
Please, I really appreciate it if you could send us feedback about this feature. My team will take into consideration your opinion.
Feel free to keep us posting if you have more questions. I'm happy to assist you.
Best regards,
Douglas.
