Yeah, I'll take a "guess"... 3 1/2 years worst case for a relatively small number of 91 DAL hires. You need to take another look at the arbitrated list. The top 2000, at least, of the NWA list lost approx. 3 years. As for your other points...sick leave? don't even go there dude....many NWA had 2000+ hrs accrued...and it went to 240 hours at DAL. Vacation? Yep...kept their longevity for that, but find themselves a lot more junior in category when vacation bidding comes around(see above). Non-rev travel based on DOH? Yeah...that makes up for everything.. in other words, they got DOH for everything.... except what matters..
Don't get me wrong...lot's of good things for the nwa's in the merger, but until they can use their non-rev boarding priority when they bid for monthly schedules, positions on AE's, and vacations, I'll have to laugh when you ask "how did they lose 3 years" "SERIOUSLY?"
You have access to the same info I do. SERIOUSLY