If you connect this directly to your modem it will replace your Wifi ID that you created. If you have a router/modem combo then you will create a new network so you will have two networks( existing network plus Google Wifi network). Wireless range extenders halve your bandwidth while Google Wifi access points do not. Use directly with modem to solve your double networking problem. Otherwise you may need to put one of your routers in bridge mode which essentially destroys your routers features and simply makes it into an expensive device that extends the range of your Wifi like your range extender that you mentioned earlier.