OK. I had both my Elites disconnected from the network and I rebooted one of my TiVo Minis. When it came back up I was still able to access and play the recordings from my OTA only Premiere. So that at least works but I have no idea how long it will last. It might last indefinitely or there might be a time limit that TiVo has imposed that kicks in when there is no communication with the host Elite/XL4. I just know that in the short term it works.