The Green Hornet to The Young and the Restless

Green Hornet's Green Hornet and Kato appeared on Batman twice,

The Bill Dana Show's Jose Jimenez also appeared as a person sticking his head out the window in a different episode of Batman.

The Danny Thomas Show was originally called Make Room For Daddy (and in syndication all episodes are called

Make Room For Daddy was continued as Make Room For Grandaddy

Make Room for Grandaddy's Williams had Here's Lucy's Lucy Carter as a houseguest

Here's Lucy's Lucy Carter and Mannix's Mannix are held hostage in an episode of Here's Lucy.

Mannix returned to TV on an episode of Diagnosis Murder to solve an old unsolved case with the help of Dr Mark Sloan.

Diagnosis Murder's Dr Mark Sloan was defended by Matlock when Sloan was accused of murder

Both have characters that have flown on the fictional Trans Global Airlines