I don't know that I've tested that personally, but it's certainly been bandied about here as if it were the gospel. You mean to say you booked at least four air segments in a continent, plus included an open-jaw on that continent, and didn't have to pay an extra-segment fee? If so, I'm certainly glad to hear of it.

It has been said that surface segments at least didn't count against the 20-segment total limit, but you wouldn't have had that limit in any case.