Bumped in to a BT engineer where I work.
(Think theres a nest of them tucked away somewhere)
I asked him about my particular setup requirements.... what he said is that it is possible, but may not be possible to do it in one go...
Guess I'l find out on wednesday.
When he calls you just before unplugging your internet explain your situation to him.
Tell him to come take a look first before unplugging maybe
