<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Darren:
He is probably coming in from Los Angeles on the Sydney flight number then going back to Los Angeles on the transcon.</font>
I'm flying JFK-SCL-LAX on LA then connecting to LAX-JFK-SYD.. on QF107 and QF108. Hence only one transcon..

And it's ok for the N. America -> South America -> N. America (no stopover) -> Australia rule.