Relative seniority. As explained to me it has nothing to do with merging the two groups. What it has to do with is each pilot group keeps “their” relative seniority. If you’re a 15-year Alaska FO, you won’t be jumped by a 10-year Alaska Captain. It keeps each seniority list as is. The merger committees are mainly negotiating percentage integration.....where the first airbus guys fall in and what ratios....and so on. The percentage integration lists would look just like what mea2000 mentioned earlier.....as an example. As for the arbitrator, they just have to “consider” ALPA merger policy and can weigh each section however they want. It becomes their show to do as they wish. I need to re-read the TPA to double-check though.