I've been throwing this one around - and get this - it's not a visual mock!
A simple idea, where one network could shoot another network a question, they answer it, and so on. They could start one at any point and time.
It wouldn't be one question after the other - then it would just get too stressful, boring, and repetitive.
If it's a question about the network, it can't be just the announcer's thoughts. The entire network team would have to pitch in to come up with an answer.
I thought it would be an interesting thing to witness. I mostly saw Channel 4 starting it off, since they're the network to think outside the box most of the time.