Question about ASUS Lyra MAP-AC2200 - Set of 3

ASUS reports on their homepage that a connection via LAN is possible. I am confused by the answers in this blog. I am about to buy a set, but I want to be sure that a LAN backhaul connection can be set up. Can anyone give a credible answer?

I have not personally tried this, but I would guess that it works. Each Lyra should be able to manage 60 clients, theoretically it doesn't matter whether wireless or via cable (switch)...

Each Lyra has 2 ethernet ports, but these are designed for additional devices. The Lyras only connect to each other via Wifi.