How may hours you have flown in the last 6 months is irrelevant. 99% of new joiners will have to do a type rating. If your flying skills aren't up to speed by then your in trouble.
Recency is just another filter.
The hold file isn't amother hurdle either. Most airlines who put you in a "hold file" will usually let you know roughly when you will start. You go through a thousand hoops to join then just told to hurry up and wait? Pretty rough really.
I bet when they do call you they want you to start now and get stroppy when you say that's not enough time.