Chopper - there used to be a system at BRNC where if you'd done all 3 years at an URNU, and were recommended by your CO, you would only do 2 terms (instead of 3). It was scrapped, I've no idea why.
As Jimlad says, there is a case that phase 1.1 ("navalisation") could be done at RALEIGH, and then move to BRNC for extended leadership, staff and academic training.