The Bold and the Beautiful to The D.A.
5 connections
The Bold and the Beautiful
The Young and the Restless
The Young and the Restless and The Bold and the Beautiful crossed over multiple times.
Matlock
Both have characters that have flown on the fictional Trans Global Airlines
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.