Cheers. Its a Huawei area - see photos
here. All I know is they appear to have elected to not install another cable link and despite having their own cable link for fttc are going to use BTw for g.fast. I have no idea what bandwidth they have on their cable links but as you say, it wouldn't perhaps be the best idea sharing it with 38/76Mb users
I suppose this may only be temporary until they get more EU's wanting g.fast from that exchange? If Leo still worked for Zen I'd ask him, but I don't like sticking my nose in too much as the g.fast connection will be in her partners name so not really my place to do so when he has his own contacts, so aside from asking him on occasion I keep out of it.