Pretty much as the picture describes. I have a BE3600 (archer BE230) in my office, where the fiber box is located, and I am using an AX72 Pro in my living room to create a mesh network in the whole house with a CAT6 creating the backhaul connetion between the two.

The main wifi mesh network is working flawlessly, as i am getting high speeds in all the house with quite seamless AP roaming, and both nodes are updated to the latest firmware.

The problem is that the guest network is not being "replicated" from the AX72 Pro in the living room, where i actually need it the most (I have NAS and other sensible equipment to which I would not like to give guests access, if possible).

I know for sure that it is not impossible to have a system like this to work, as I have just upgraded from a mercusys AX3000 mesh system that supported whole house mesh with both main and guest networks, while costing half of the combineation of BE3600 and AX72Pro