This is a little different, but for a little while here in south Georgia we had Jeopardy (but not Wheel) on two different stations. WALB (NBC) showed it at 11:30 AM, while WCTV (CBS) showed it at 7:30 PM, after Wheel at 7. WALB is an Albany, GA station and WCTV is out of Tallahassee, so they're in two different markets, but most people in the area could pick up both. One could watch the morning airing, memorize the answers/questions, and play a good joke on someone who didn't know it aired in the morning.