Can we connect Google Wifi to existing Router?

[NoraSmith]

Hello,
Each Google Wifi point is a router that's designed to work with your existing ISP and modem. Google Wifi can create a mesh network only with Google Wifi and OnHub routers. Google Wifi will work with most connected wireless devices including tablets, printers, and smart appliances.

To know more, you can visit:

Google WiFi Setup | Google Wifi Login