Prolonged LH deprivation -Over stimulation of Leydig cells. There is "NO" reason to use HCG post cycle, period. What happens when you dose HCG , your increasing intr-testicular estrogen and a surefire way to desensitize Leydig cells .Desensitization your leydig cells they become "unresponsive". Your Leydig cells are stimulated by the LH signal, no longer responding to LH, you will not produce testosterone. You would become hypogonadal (low T)
In laymen terms- Primary Hypogonadism.

Post cycle- (pct) SERMS ! Clomid and Nolva are not "Suppressive. You need them both, and only them. We are trying to accomplish our "natural" HPTA , you just came off a ## weeks of being suppressed.... My thought........... GhostProfit