NCIS: New Orleans to W*A*L*T*E*R
9 connections
NCIS: New Orleans
NCIS: LA
NCIS: LA and New Orleans spun off 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
Law & Order
Hudson University is the fictional University where many Law & Order characters graduated as well as the location of F.I.R.E.S.T.O.R.M. On Arrow
Homicide: Life On The Street
Law and Order and Homicide crossed over on four episodes
Oz
Homicide's detectives watched Oz's Miss Sally on TV.
St. Elsewhere
St Elsewhere's hospital management company Weigert (was Ecumena) took over Oz's hospital.
M*A*S*H
St Elsewhere's Mark Craig talked about M*A*S*H's BJ Hunnicut.
W*A*L*T*E*R
MASH spun off WALTER which was about Radar after the war