I know two dudes who were Captains before the even made it to the FTU! Also knew quite a few guys that made Capt while in the B-Course. These were all guys who had no previous jobs...extended time on casual, UPT delays (38 crashes), >400 days from UPT graduation to starting IFF, Hog wings cracking, Eagles breaking apart, Viper bulk heads cracking! Most took adavantage of the situation and finished their masters...all used their time wisely, took leave and partied their asses off!
There were even a few guys who gave up their Viper/Hog assignments after being told their wait to start IFF would be >450 days...I think they went the the C-17 and KC-10.