What emcee hosted two US daytime network game shows simultaneously---on different US networks?

Alex Trebek if you count Super Jeopardy on ABC.

Super Jeopardy! was primetime.

I'll have the correct answer for you Saturday morning. Good night, all!

Was he the regular host for both or did he sub-host on one while regularly hosting the other?
If you're talking about a one-shot on one of them, Richard Dawson hosted for an episode during an all-emcee week of Tattletales on CBS at the same time he was hosting Family Feud on ABC.
Another sub-host possibility is Dennis James covering for Bob Barker for a couple of days on TPiR on CBS while winding down his stint on Name That Tune for NBC.

Regular host of both shows.

Guessing : Dick Enberg

Correct! 1973 the year.

Hats off to you. That's a devilish puzzle, and while some people might cry foul, it absolutely fits the conditions as you stated them.

My density must be at its peak this morning. What are the shows?

If I had to guess, he's referring to Baffle and the short-lived Sports Challenge run on CBS--though I thought that was weekends only.

That's right, but I didn't say they were both on weekdays. Just daytime. :)

QFT. Fantastic puzzle.

I thought of Enberg, but for Three for the Money. I went to the Wiki article for SC and saw it said weekends only, and started thinking of other hosts.

Well played, Jimmy.