@Tony Unlike netgear orbi AC. Minimum distance is 30ft if not, the wifi strength needs to be reduce to avoid interference. Thank you for the info.

For wired backhaul connection as shown in here with Gigabit switch https://www.tp-link.com/us/support/faq/1794/ How close can you place 2 Deco X60 one next to the other before creating interference?...