Home Hub 4 wifi id names

I have a HH4

When I use Wifi Analyzer on it I see three devices on its channel: set to channel 11 as there on only two very weak signals from neighbours there.

My question is the devices named. They are:-

My SSID
BT Wifi X
BT Internet FON

I understand my SSID and Bt Internet FON but what is BT Wifi X?

I note that on another channel, one of my neighbour's also has a Bt device with the same three devices shows; although very weak of course.

I believe it's an encrypted version of BT Wi-fi which tablet and smartphone apps can connect to.

Thank you

I am finding that I cannot use BTWifi-X at home because my SSID takes over. I wonder whether that is by design?

It's a WPA2-Enterprise connection with 802.1X, often used by apps which use a certificate for authentication.

If you don't have an app to connect to it, you can use the BT-Fon connection with your BT-id and password for authentication instead.

Thank you

Yes it is by design. If you look at the settings in the BT Wifi app you'll see an option which is enabling this behaviour.