Why shocker??
That must b an Emergency Freight service.
If some place needs stock immediately, they send out a emergency freight, the entire section gets notified n let this freight go ahead. in this process, even a mighty Rajdhani will b kicked into a loop.
And the other Freight service is the Python/Conraj/Concor one, which is very lengthy one. this one doesn't...
more... spare neither of the trains en-route n overtakes any class which comes in its way til its destination.