Originally Posted by
phh1998
Thanks both for the detailed advice, it is really helpful and much appreciated. Given all this information, connecting to AS in T6 definitely seems like the better option over connecting to the AA Eagle's Nest via T4/T5 - I'll opt for the AS flight.
I'll just add one more detail.
As you will be connecting from one oneworld carrier to another, you will probably be flagged as a passenger with a tight connection. Look for an agent in the jet bridge or just outside it who will be handling out orange "Express Connection" boarding pass sleeves. The agent should have one with your name and flight information. That should speed up your process through immigration, customs and security.