Rocky Marciano + Rose Marie

Years ago, I remember seeing heavy-weight boxing champion, Rocky Marciano, and Rose Marie (of "The Dick Van Dyke Show") do a comedy skit together (about boxing) on television. I am not sure what show they were on, but I think it is a good possibility that it was "The Merv Griffin Show."

I remember watching the skit in the afternoon, and the skit had just the two of them performing in it in front of a live audience. Near the end of the skit, Rose Marie sang a song (the name of which I cannot recall).

Does anyone know if Rose Marie and Rocky Marciano ever performed together on "The Merv Griffin Show?" If not, does anyone know where I could possibly obtain this information? If Rose and Rocky did appear together on Merv's show, I am certain that that is where they performed this particular comedy skit about boxing. Any help would be greatly appreciated. Thanks!

R