Dragnet to The Bold and the Beautiful
5 connections
Dragnet
Adam-12
The main characters from Adam-12 appear as witnesses in an episode of Dragnet
Emergency!
Emergency! had a crossover with Adam-12 to find a boy who ran away from the hospital.
Matlock
Both feature the fictional Trans Global Airlines
The Young and the Restless
Both have characters that have flown on the fictional Trans Global Airlines
The Bold and the Beautiful
The Young and the Restless and The Bold and the Beautiful crossed over multiple times.