Hi!
I recently purchased 2x ZenWifi XT9 units and have these configured as follows with FTTP:
FTTP ONT -> 1st XT9 (Main router) -> 2nd XT9 (Upstairs)
ONT is connected to the main XT9 via CAT 7 Ethernet cable. 2nd XT9 is connected via a wireless backhaul on 5 GHz-2 (160 MHz, fixed channel...