Well it doesn't seem to matter, I personally know of 4 captains with internal recommendation letters who used to fly with the Spirit pilot who's in Spirit right now and still no calls, while FO's are getting interview calls. So it's either HR doesn't have a method to the madness or they favor internal recommendation letters from their favorite Spirit pilots over the rest. There is no logic except for the people making the phone calls scheduling pilots. I know the frustration is showing, but time is of the essence to try and get in Spirit ASAP.