Race b/w NFRs two super slow corridor.. 55726 APDJ NJP Passenger representing .Elephant Corridor the section which has otherwise no restrictions but often wild elephants endangers the security & thus speed has to be restricted..On the other hand 55616 Silchar Guwahati Passenger though newly gauge converted but avg speed can ashame a few MG sections of IR mainly because of the tough terrain,unstable river beds,too many tunnel's & journey through difficult landscape one side stiff ridges on the other hand chances of washing down into Barak River Valley Already 4-5 derailment of freights observed in this section even after CRS approval. 55616 covered 24 km in first 55 mts with no xings whereas 55726 covered 35 km in first 63 mts with one xing.