American Horror Story to DC's Legends of Tomorrow
5 connections
American Horror Story
The X-Files
Morley Cigrettes, the brand smoked by Cancer Man from the X-Files is smoked on American Horror Story: Murder House
Homicide: Life On The Street
Homicide's John Munch questioned The X-Files' The Lone Gunmen.
Law & Order
Law and Order and Homicide crossed over on four episodes
Arrow
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
DC's Legends of Tomorrow
Arrow spun off DC's Legens of Tomrrow