Benson to DC's Legends of Tomorrow
14 connections
Benson
Soap
Soap's Benson DuBois spunoff on to his own show, Benson
Hanging In
Maggie Gallagher from Hanging In crossed over onto Soap
Maude
Hanging In (and Maude's) Maggie Gallagher crossed over onto Soap for 10 episode
All in the Family
The first All in the Family spinoff character was Maude. Maude was Edith Bunker's cousin.
The Jeffersons
The Jeffersons' George Jefferson was the second All in the Family supporting character to spinoff onto his own show.
Mission: Impossible (1966)
George Jefferson gets help from Barney Collier from Mission Impossible
Mission: Impossible (1988)
Mission: Impossible was continued 22 years later
Diagnosis: Murder
Diagnosis Murder's Doctor Jesse Travis's father is a spy that someone is trying to kill. One of the possible suspects is the original Mission: Impossible's Cinnamon Carter.
JAG
Oceanic Airlines
NCIS
NCIS was a spinoff of JAG
NCIS: LA
NCIS: LA was a spinoff of NCIS
Hawaii Five-O (2010)
NCIS: LA and Hawaii Five-O worked together in a crossover episode to stop a smallpox outbreak
Arrow
Hawaii Five-O references Dominic Alonzo from Arrow
DC's Legends of Tomorrow
Arrow spun off DC's Legens of Tomrrow