I have the ONT going via ethernet to Google Wifi. Google Wifi is setup as 192.168.1.1. Prior to doing so, I reset the Verizon router...disabled wifi...disabled DHCP...and gave it another ip on the same subnet. I set a DHCP reservation in Google Wifi for the router. I plugged the LAN out from Google into the LAN of the Verizon router. With this, I currently have internet, tv, on demand, tv app, remote dvr, etc. working. Yay.
Now, with that said, I meant to plugin the Google to the WAN port on the Fios router because that is what I read.
What does LAN to WAN buy me? (everything seems to be working)
Am I going to run into an issue later that I haven't seen yet?