Did you know that the Ganga & Kaveri rivers are connected? ... by Mysore Varanasi Express - Vishwanath Joshi

Also slot is very important thing. BSK is first to arrive at CNB in the lot. Departs before SS. No super fast departs before BSK. So it is mostly able to reach Ndls on time.
Just before getting shifted to LKO Vaishali used to overtake BSK and GD almost 1 or 2 times a week , if they hampered it's run.
But as I said time has put this legend on test.
And...
more...

one thing make it clear in ur head - no Train gets a priority in NCR like it's Prince PR..
Rest all depends on how much time a train can recover, depending on traffic and congestion.
And last word - give a train 4 stoppage in NCR, then matter who u r, u will get thrashed, if u loose Ur slot.