Originally Posted by
Bigpimppilot
What he meant was that all the lifers are on the 175 enjoying the long legs and good apu. If you ever want to see weekends off before you flow the 145 is the way to go
This may be true in Dallas, not so much in ORD. Most of the Captains there seem to be younger, with an average of 12-16 months to flow. Movement up the list should happen at a bearable pace up there.
To the OP, its company seniority.