Broadcasting hidden networks on 5 ghz and 6 ghz

I have set the 5 Ghz channel to 44 and maximum speed up to 5.8 Gbps, but it keeps falling to the 80 MHz bandwidth after sometime and doesn't seem to revert back to the 160 MHz bandwidth. Shouldn't the router fall back to 160 MHz bandwidth if any detected interference in the DFS spectrum is no longer there?

Is there any way to disable the hidden SSID's broadcasted in the 5 and 6 Ghz bands in the router which is supposed to be part of mesh backhaul as per the debug page? They add to some channel utilization in both the bands which doesn't serve any purpose in a non mesh router.