...then HE/SHE is being optimistic. Do your due dillegence and a gut check of the situation to determine if the numbers add up or is a sales pitch with overly optimistic projections are being blown up your outflow valve.

Envoy will have to have a stunning upgrade/hiring spree from 2017 through the first half of 2018 for you to make captain at Envoy in 2.5 years and if that is unrealistic, how can a 6 year claim of flow to AA be, if they are codependent ?

Caveat Emptor.