Originally Posted by BT87
Is it only North America, where you can enter twice by using South America as the extra continent.
That is correct. Only 2 exceptions are:
1. N.A. you can enter twice when one is a transit, it can be between S.A. and Europe/Asia/SWP or vv.
2. Asia when one is a transit or a single plane service between Europe and SWP or vv. (you find a lot about this issue with a search...some have managed to get CX to ticket routings with an Asian (=HKG) transit between NA and SWP and still being able to do Asia later/before...)
+the few African dead end destinations with specific expeptions that are only accessible from Europe