Yes, if your AC flight is on time, it is more than enough time.
You will have to reclear security in HKG ( and possibly get your boarding pass at the
transit desk if you did not get it at origin).
You will then find your TG gate is adjacent to the gate you just came into on the AC
flight ( but you will have traversed a considerable distance going through the security
check point.

You should even have time for a 30 minute stop in the TG lounge.