I was recording and watching the Mavericks game on ESPNHD. The Tonight show was also recording on 5-1 OTA. When the Mavericks game ended (I was watching it live at that point), I pressed stop to stop the recording at that point. I later realized that The Tonight Show recording was only 30 minutes. It turned out it had stopped at the same time. Not that I care that much as I'll be returning my 921 over the Dishwire fiasco.