HGH is not in any way going to help with HPTA shut down (and the way that feels) and would not be a 'bridge' between cycles, though it in no way is a hindrance.
dollar for dollar , there is no comparison , AAS blows hgh away period. HGH is best used in body building as a 'supplement' compound or the 'cherry on top' sort of speak . Run it along with Testosterone and insulin for 8 months and get a synergistic effect, or run HGH year round while blasting other AAS compounds . its a 'finisher' to an already well put together AAS protocol.
but on its own HGH has no anabolic properties. is it beneficial , yes . but you get the most out of it running along side AAS , not separate as a 'bridge' . imo