Well, if u want me to be brutally honest, then irrespective of whatever timing u provide from Ghy, this route dont have the capability to sustain a 16 coacher Vande Bharat. U will definately get 300-400 passengers but i dont think that would be enough to fillup the complete train. Tbh Guwahati still now dont have a large number of premium travellers for short distance journeys. That's why Dbrg Shatabdi was discontinued and Nhln shatabdi is still struggling to get passengers despite of having just 4 reserved coaches. Anyways fingers crossed........hope it proves me wrong
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more... regarding the early morning dep, i did understand ur point and i respect that. But personally i feel that chances are very less that even a early morning dep from Ghy can save this VB.