You need to go back and read the OP, because you're not really following what happened. The gate changed and the other guy raced down the concourse and got in line ahead of her at the new gate. In the OP's own words: " And guess who bolted & is now in front of me." The OP has no idea whether "protocol and priority" was followed, (nor do you or the captain) because both jumpseaters got on the plane. Presumably, if there was only one seat available, the UAX OP would have been boarded instead of off-line other guy. We have no way of knowing that the established priority was not followed, because again, both jumpseaters got on the plane. So, yeah, this is *exactly* about the other guy racing to the new gate in getting in line first. I'm not defending the other guy fast-walking to the next gate to get ahead of the jumpseater who was first to the original gate, but c'mon this is a completely CS issue to go tattling to the Captain about. If you have issues with the other guy's etiquette, man up and tell him yourself. If you have reason to believe that established JS priority was broken (and there is no solid reason to believe that here, it's all pure speculation on what might have been.) then ask your JS coordinator to bring up the issue with the other airline's JS coordinator.