I dont understand why a train is given 5-6 hours of slack time between NDLS-AGC. Does these trains stop at some dhaba in between or they take passengers to Mathura/Vrindaban city ride?
They only delay sf trains falling under same time frame, because there are easily chances that some goods train or other emu might already have occupied loop line so that means search starts for another small station to occupy the loop line so that they can make way for sf trains.
Stupid NR/NCR.