The train halt @ BPQ/Dhone, for technical reason of evening snacks load & LP/ALP change respectively,. Same way DRNTO make the halt for dinner upload!@ BPQ & Crew change @ GTL! Thats the required technical halt...Dhone ARR for Raj isnt convenient along with patronage the train would manage there!!!
And with technical purpose, train dont have to await for scheduled ARR/DEP, in case its running quite befor in time!!!!