We are flying on United into Melbourne (via Sydney from SFO) I have two questions. First, do we go through customs in Sydney or Melbourne? Second, we are scheduled to arrive in Melbourne at 9:40 am and we have a flight out of Melbourne on Tigerairways at 10:55 (with gate closing at 10:10). Assuming the United flight is on time, what are our chances of getting to the Tigerairways gate by 10:10? Thanks.