See? There I go confusing things again.

Yes, there are two ethernet cables running through the conduit from the new building to the old one. There may be a third, unterminated line, but I haven't tried it yet. That will be the next step, I think. I'm not really sure why they ran multiple lines. Perhaps in case something like this happened. But if none of them work, then it doesn't matter how many are in there.

If I didn't mention it: I noticed today that at the start of the conduit, in the mechanical room of the new building, someone did have the foresight to include a pull chord for new/replacement cable. But you know what some other a-hole did? They filled the end of the conduit with friggin' cement! WTF?