Providence to The Flash
5 connections
Providence
St. Elsewhere
On the series finale of Providence, St. Elsewhere's St. Eligius was suggested to Dr. Sydney Hansen as a future place of employment.
Homicide: Life On The Street
St Elsewhere's Dr Turner was investigated for murder by Homicide's Pembleton and Bayliss.
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
The Flash
Arrow spun off The Flash