Did this show have a promo during 'To Tell The Truth'

While watching old episodes of "To Tell The Truth," there was a promo for an upcoming show. It was a man a a woman speaking and I seemed to have recognized Harry Morgan's voice.

The promo sounded like it had each act I saying their characters' names and then saying "but the mailbox says Portter."

After looking up Harry Morgan's filmography, this one seemed to be it. I've never heard of this series before but it looks like it still has a loyal fan-base. Is there any way/where to see this series now (online/streaming)?

It possibly could have been "Pete and Gladys" which was a spin-off of "December Bride," and probably featured Harry Morgan moreso.

Thanks for any information!