Was he one of the hosts who appeared around 10AM ET? I didn't get up until around that time, and a man that I didn't recognise was hosting the national version at the time (he was in a white suit, I think).
Locally, our local station (WFTS in Tampa Bay) decided to start the marathon at 9AM ET Labor Day instead of Sunday at 9PM or 10PM in past years, though I got to see the 2-hour delay on WGN when they started up at 11PM ET.