Is the 603 the same type as the CRJ? Sorry, couldn't resist!

I spoke to someone in the flight department last week and was told they had not called anyone in yet for an interview. The people involved in the process were very busy all this week and she wasn't sure what kind of timeline they were working on to fill this position. If anyone was wondering, they have 2 Challengers. I think one is a 604 and the other is a 300.