Originally Posted by Pineapple Guy

A guy's seniority number at Compass/Mesaba/ASA/Comair or SWA/AMR/UAL for that matter, or any other airline should have zero bearing on his seniority number at DAL. The fact that some have a flow through agreement means they're entitled to a class date, and therefore a DAL seniority number, but not to any special rules regarding what that number is.