Home Internet and wifi extender

I will be very interested to hear if and how the extender works. There's no dedicated gateway WiFi 6 extender (that I know of) to wirelessly extend the gateway. That means a router would need to be hardwired to the gateway, and then an extender/beacon/node needs to be used to extend from the router. It's unfortunate that the WiFi extender feature on the gateway is such a mystery.

See this. Somehow we are supposed to be able to connect a mesh network (system), but there’s no documentation on how to do that.