My Nest Wifi Point kept getting stuck on “Waiting for the final bits of setup to complete” and eventually timed out.
What fixed it for me:
Google Home → Wi-Fi → Network settings → Advanced networking → DNS → change “Automatic” to “ISP DNS”
After changing it, I tried adding the Point again and the setup completed successfully.
Posting this in case it saves someone else from doing factory resets over and over.
Source: r/googlehome · by /u/Sea_Travel_7386