Your analogy misses the mark, it's more like two football NFL teams(pilot groups) with their own coach (MEC), setting their own priorities and executing their own strategies to put their own team in the best position for success. There is one Commisioner (ALPA national) who ensures the rules (C&BLs, admin manual) are complied with and protecting the interests of the league (profession) from outside influences (cabotage, foreign ownership etc) from bringing the league down.