while demanding any train we need to be logical because full AC rake cant be managed overnight...moreover I feel that there are enough No. of AC coaches present in 12343 & 12377,remaining if required Platform length @ SDAH for 9C have been increased so upto 5 coaches can be augmented in trains such as 13147 & 13149.....so what is now practical is that ER has 3 spare rakes of Poorva Exp which are 24 coach in length & have ideal CC...so can be pressed into service....if 2 rakes can be pressed then we can see a Daily Overnight special in this sector.