Well, this is interesting. A poster with 2,400 odd posts says one thing, and a poster with 6,200 odd posts says something different. Thanks to both for their replies, but which one is correct?

Everything is on one ticket, and there are no stopovers, only connections.

One thing is certain, I need a better informed travel agent. If I had one, I'd be flying through Europe and instead of the SA flight from ATL to JNB!