Thanks for reaching out to the Google Nest Community and sorry for the delayed response.
Please note that we have very limited support on TV's with built-in Google Assistant like Sony Bravia. If rebooting your router and TV does not fix the issue, I suggest that you reach out with the manufacturer for better assistance.
Let us know if you have questions about the Google Home or Nest speakers and displays, and we'll be glad to help. Otherwise, I'll close the thread after 24 hours.