Round-the-world SAS EuroBonus challenge part 4: Finishing strong with 6 European airlines and Aeromexico

A day after Christmas, I started the final stretch of the SAS EuroBonus million-point challenge, where I would end up taking 20 flights on 16 different SkyTeam airlines over the course of 25 days in order to nab 1 million SAS EuroBonus points. My first leg was a jaunt from Portland, Oregon, to Seoul, South …