At the moment we are considering this itin: CX from TPE to HKG and CX from HKG to SYD. There will be 2 separate bookings - because they are miles redemption and we will have to book them separately as dates become available.

Q - We would like to spend some time in the lounges - have not been to HKG lounges for ages. Therefore would like to know how early can we check our bags in for flight from HKG to SYD? I have looked at CX website but could not find the answer. [Our experience in Sydney with QF we can only check our bags in 4 hours before flights.]
I think we have to collect our bags on arriving into HKG and check them in again for the flight to SYD. Or, can we ask CX to check our bags to SYD when we check in at TPE - if we show them our 2 separate booking ref etc?
We would like to know this before we book flights.

Many thanks!