I believe they did.
Well, I watched the CNN Paula Zahn show tonight, and the Schindlers were NOT on. I was bummed, but it did look like they had to put in some filler for some reason or another. They had Larry King come on and chit chat it up with Paula when his make-up wasn't finished and his suspenders weren't on. Then they followed up with a loooong promo for Wednesday's show with Tommy Thompson. Looked to me like they were ad-libbing it. Something must have happened.