The seniority list isn't a management issue. The union(s) determine how to merge the lists. The members cannot take job action against management for a matter which is internal to the bargaining unit.

That's not to say that CP pilots won't be p.o.'d over list merging. But the choice between sticking it to management or sticking it to the opposing union, would give a lot of members pause.

Don't forget that in the last pilot's strike, the CP pilots refused to work additional sections to replace AC flights. They were willing to do second sections on CP's own flights, but not totally new operations to replace AC services.

And the regionals are not involved in the seniority issue. If they were in a legal position to take job action, why would they stick up for management against the AC pilots? (Moot question, I know).