I am flying ORD-LAX-BNE with a return flight of BNE-SYD-LAX-ORD. The layover in Sydney is 1.5 hours. Is this sufficient?
I was wondering: when does immigration happen when I'm leaving Australia? At Sydney or at Brisbane?
For instance, in the US, I merely walk up to the agent, show him/her my passport. He/She would take my I-94 card (which I know is no longer used) and on any other connecting airport within US, I would simply change gates. Is it the same in Australia?