Lou Grant to The D.A.
10 connections
Lou Grant
The Mary Tyler Moore Show
Lou Grant spun off of The Mary Tyler Moore Show
Hi Honey, I'm Home!
The Mary Tyler Moore Show's Georgette Baxter crossed over onto Hi Honey, I'm Home!
The Honeymooners
Alice & Trixie from The Honeymooners crossed over onto Hi Honey, I'm Home!
Here's Lucy
Here's Lucy's Lucy was driven around Miami by Ralph Cramden of The Hooneymooner's
Mannix
Here's Lucy's Lucy Carter and Mannix's Mannix are held hostage in an episode of Here's Lucy.
Diagnosis: Murder
Mannix returned to TV on an episode of Diagnosis Murder to solve an old unsolved case with the help of Dr Mark Sloan.
Matlock
Diagnosis Murder's Dr Mark Sloan was defended by Matlock when Sloan was accused of murder
Emergency!
Both feature the fictional Trans Global Airlines
Adam-12
Emergency! had a crossover with Adam-12 to find a boy who ran away from the hospital.
The D.A.
Adam-12 had a two part crossover with The D.A.