How long (time) to transit from arrival Airasia airline T2 to Asiana airline T1 at HKIA?

We are arriving at 9.45 am with Airasia in T2 and we need to go out customs to clear our baggage and our next flight is with Asiana airline at 1 pm.

Do we have enough time? How far is the terminal 2 to terminal 1? Which way to go is the best.