Originally Posted by
Stanbury
They are not available for all European destinations, but they do exist for some joint fares (e.g using AF for a sector from CDG to a destination on France not served by AC), and they also work nicely for open jaws.
Fascinating. I also had no idea that such a thing existed. Looking at ExpertFlyer, I see these fares available on most (actually all that I've looked at so far) TATL flights ... YYZ to ZRH, LHR, CDG, FRA, MUC ...
It appears to be only a feature of TATL flights, I don't see equivalents for TPAC or transcon.