CSI: New York to Millennium
4 connections
CSI: New York
CSI: Miami
CSI: New York was a spin off of CSI: Miami
CSI: Crime Scene Investigators
CSI:Miami was a spin off of CSI
The X-Files
Morley cigarettes are smoked by Warrick Brown in a episode of Crime Scene Investigation.
Millennium
The X-Files' Jose Chung was also investigated by Millennium's Frank Black and later X-Files' Mulder and Scully meet Millennium's Frank Black.