Sawyer on the plane?
I’m not sure if anyone has mentioned this, but no one has really talked about Sawyer in the alternate timeline. His whole point was to go down to Australia to kill the original Sawyer, which turned out not to be. Thus, he was pretty miserable on the original flight. In the ALT, he seems to be rather pleased with himself. Did he actually do the killing? Was he there for other issues? Did his parents’ murder-suicide even happen?