As others have already said, no need to travel together. The flights on the pass can be shared between the two persons in any fashion you like -- so (for an 8 flight pass) 4 each, or 5-3, 6-2, 7-1 or even 8-0. Also, when we used the European Latitude passes the cost per flight was the same for the one person 6 flight and the 2 person 8 flight passes.

I recall that when we first looked into using these passes it was indeed hard to glean the detailed, exact conditions from what was on the site. One of the wonderful AC folk at YWG put us in touch with a person at AC who knew and shared the complete details.