Thanks for the answers---I suppose that's perfectly sensible. But, since it's based on whether the actual flight number is a PSO flight or not, then I suppose I can use the reciprocal arrangement to my advantage, right? For example, if I fly HFT-TOS-KKN, then I'm assuming I will earn two qualifying segments because each of HFT-TOS and TOS-KKN are non-PSO flights, even though the total route HFT-KKN is on the PSO list and a direct nonstop flight would earn nothing.