Yes, it’s possible to use coax cable to send a moca signal to another house.

Nokia Beacon - turn on VLAN TAGGING.

https://wifi-helpcenter.nokia.com/hc/en-us/articles/4403791131543-Configuring-VLAN

Then, follow these steps.

https://support.google.com/googlenest/answer/9798157?sjid=13039123359325351174-NC

Yes, you can replace your router with the same model (ASUS RT-AX3000) and keep all the network names and passwords the same. This should allow your devices to reconnect to the new router seamlessly, as they’ll recognize the network credentials.

The 1300Mbps is calculated by max of the 5Ghz + max 2Ghz speed + max streams.

No worries about my VPN. The rogue access point is a possibility for why you cannot connect to game servers. But then again it can be a number of other things too

No worries!

1 Gbps is computationally 1.24416.

Might want to verify you’re connecting to the correct access point and not a rouge one. Want to use my VPN?