For sure. Every seniority list merger in every industry raises the same issues. In just about any union shop, seniority affects bidding on vacation, schedule, equipment and pay. But in your average manufacturing shop the impact on your lifestyle is relatively mild... a few bucks an hour difference maybe, you get to choose the less crappy jobs and you get a few extra weeks vacation a year as you become more senior. But in the end you are still working the same number of shifts per week and largely in the same conditions. By comparison, the difference in pay and working conditions between running the E-75 on Rapidair versus a 777 long-haul is enormous. The low-seniority pilot is living on maybe $40k per year while the high-seniority guys are working long-haul 8 days a month and eating caviar. You set things up this way, as the airlines and pilots' unions have, and mergers mean war between pilot groups every time.

The sad bit here, of course, is that Air Ontario and Air Canada never merged, and a common employer application before the Labour Board failed. So this seniority list merger and subsequent multi-million-dollar war was, from the outset and at all times, the product of a few wildly overactive imaginations.