Cody Coyote went to the vet this morning. He does indeed have kennel cough, which the vet said may be causing his potty issues. He has drugs to treat the illness and we were given orders not to let him do any heavy exercise for about 2 weeks. Light walks it is!
Jacko-pea is adjusting. Last night he seemed to realize that Cody isn't going away and he's begun to stand his ground to Cody, not letting him take away the bone or force Jacko to leave the chair he's sitting in, that kind of thing. It will take a few more weeks, but we seem to be on the road to harmony.
Finally, we're re-housebreaking Cody. So far so good. The real test will be in a couple weeks when we start trying to let him signal to us when he needs to go instead of us dragging him outside every hour "just in case."