Originally Posted by
christep
Departures and arrivals are separated at HKG. Once you have gone through transit security to the departures area (where the lounges are) it is not at all trivial to get back landside (and causes CX extra hassle). Since you have 8 hours I would strongly recommend simply going directly to landside on arrival (not through transit security to the departures level), and talking directly to the people at the ticketing desk.
+1
not trivial and likely to be discouraged by CX staff. i attempted a similar scenario at HKG few years ago and was told to go landside first...