I anticipate Air Canada could ask for any such information to be sealed, and the judge would likely grant it if the airline is able to make their case that it’s release would harm their competitiveness or breach confidentiality with third parties. Specifically for the arrangements between *A partners. Just because something is made available in a court case doesn’t mean it is in the public record.
Yes, they can ask, and the judge may or may not grant the request, it's a risk.