Private interdimensional hotlines sound like the best kind of hotlines. We don't even have that direct a line to the Justice League back home.
[And he's not one of those guys who thinks magic and science are incompatible. He thinks magic is a special kind of science that only a few people can use.]
I wouldn't mind. Maybe we could start with some kind of bypass communication system. I've already been working on one that doesn't use the network so it's off the radar for the eyes in the walls.