Not clear exactly what you’re asking- as of the last vacancy, NB CA in IAH bottomed out around 5-6 years with the 737 going a bit junior to the 320. IAH 756 FO got essentially to the new hire level. As always, current conditions are no indication of future opportunities.

Also, hiring trends will really skew yearly comparisons going forward. Right now, the difference between a new hire & a 6 year guy is around 4,000 seniority numbers. If that 6 year guy looks upwards 4,000 numbers from his position, the disparity in hiring dates could be decades. Assuming current hiring trends continue, today’s new hire will be able to look 4,000 numbers down the list in less than 2 years.

The position of an x-year pilot is today is a pretty poor indicator of where you’ll be in x years.