Thanks for the replies. My installer was out Friday. He didn't want to put the HIC on a "split" line. He said they have had (unspecified) "problems" with 3 devices, e.g. 2 Joeys and a HIC, on a client line. What he did, and I suppose it's fine, is put one Joey from each hopper on a host line with a tap, and the second Joey on its respective client line. The HIC is installed at one of the Joeys connected to the client line, IIRC. He still had some trouble getting the Joey at the HIC locaction to work correctly (it would show the menus, but no programming). He had to go back to its Hopper and reconfigure the Home Network to get it to work.
Everything seems to be working fine, EXCEPT that when I turned on the Joey in the Master Bedroom this morning, I got a "Searching for Hopper #xxxxxx" screen, and had to reboot the Joey. Is this something I can expect to see a lot?
Brad