Instead of HA1 and HA2, why can't they have H1 and A3?
2 halves of 2AC will make a full second AC. And two halves of 1AC will make a full firstAC.
Also when we have 12775/76 which is a full AC train, why is Gowtami having 7 AC coaches? Gowtami must have more SL coaches - 14/15.