My Orbi setup instructions recommend disabling the wifi on a gateway if you are connecting to that.
I found a setting in the Admin panel under WLAN settings which appeared to do that, so I unchecked the boxes that said 'Enable 2.4 and Enable 5.0"
Doing so has not affected the availability of the Orbi wifi but a number of oddities have appeared - the alarm company rang and said the alarm was showing off line (it's a wired connection) and the TV said it could not access Netflix (ethernet via power socket relay thingy)
I can't see why disabling the wifi would affect the ethernet connected parts.
No one connects to the VF system in the house as it does not reach far outside my office so is tantamount to pointless - hence the Orbi and prior to that the Apple Airports.
If that is not the correct way to turn off the wifi part, what is?