Well, if they would agree, that would be the end of the debate. I assume that it's that ongoing debate that keeps their respective livelihoods afloat. As for the apparent difference – Goff claims that the physical world is consciousness, Kastrup claims, as far as I get it, that physical world is illusion. Both of those claims say the same thing – there is only consciousness (also) appearing as, or formed into, (illusory) physical world.