I agree Budh purnima waise hi bhut long route se hokar Varanasi jaati hai. Rajgir se Patna uske baad phir Gaya and then takes Grand chord to reach Varanasi. Is train se End to End jaane wala jyada nahi honge kyuki bhut lamba route ho jaayega aur wahi baat rahi Munger ki toh Jamalpur me pehle se DDU/ BSB ke liye kaafi train hai lekin Rajgir jaane ke liye train nahi hai isliye iska extension kr rhe hai taki Munger aur Rajgir ke beech connectivity ban sake.