You will have to ask the NMB that.
The stock clerks have been under the CBA for at least 40 years.
so now it's over 40 years... it just keeps changing, anything else you want to declare......
if they know that the pension would be between 78 and 145, then they should know how much closer it should be, but the lack of a closer estimate makes me think it is closer, ALOT CLOSER to the 78, like 78.01