After working on getting a job flying a Challenger 604/605 the types are different. With a CL-65 you would do the "short course" to get a CL-604 type. Assuming these are both PIC types you will have BOTH on your cert. The Global is a whole other $50K type rating. Its a BD-700. The CRJ-100,200,440,700,900 are all CL-65 with differences training.