XT8 AiMesh: disabling 5GHz-2 on some ethernet nodes

[kildare]

Hi,
I have an XT8 only AiMesh (AP Mode) with 1 main unit and 5 nodes.
Some nodes have an ethernet backhaul and shouldn't have to receive backhaul connections from other nodes.
Do you think it's possible in these nodes to disable the 5GHz-2 band or they are anyway used as 5GHz-2 passive repeaters?
Thanks.

 

[Tech9]

I have an XT8 only AiMesh (AP Mode) with 1 main unit and 5 nodes.

Why do you need 6x routers in AiMesh to begin with?

 

[kildare]

Yes, four levels, large concrete building, no 5GHz-1 wifi passing adequately across the thick floors.