Sorry Nick, I'm being lazy with my terminology!

The B&G Edge is connected to a multiport hub using the ethernet cable. The NGX-1 is connected to the multiport via the USB-A and this is connected to the laptop with a single USB-C.

In Exp, the NGX-1 uses COM3 and is set only for AIS data. The Edge uses Network 0, set for B&G Websocket. Address as per the IP address that works for the Web Interface and I checked this on the Triton displays. Port 2053.  GPS is also from the B&G.

I do have a PIN set (and entered in the Exp PIN box) but I can disable this and try again.

Frustratingly, it has all worked really well since installing the Edge in the beginning of this year, and I haven't knowingly made any changes to cause this new 'challenge'!

Hopefully I've explained things a bit more clearly?

Latest version of Exp, Windows etc...

I was onboard agains yesterday so I accessed the Edge via the web interface and removed the PIN. When I tried to access via the web again (now without the pin) it couldn't find the IP address... I was feeling like I was going backwards and was just about to give up when I noticed that all the data was being displayed in Exp! I did a couple of exits / restarts / reboots to test. The Edge & NGX-1 now repeatedly connects to Exp but the B&G won't come up in the web interface...

Happy the Exp connection issue is solved, but not sure I can offer a logical reason why yet!! I'll test & explore this again and post here if something makes sense that could help anyone else...