Therefore, before the introduction of the Howrah Duronto, it was expected to be the fastest service on the route by many Indian railfans.

Beginning 6 February 2018, the route of this train was changed from Grand Chord (via Gaya) to mainline (via Patna) on request of Godda MP Nishikant Dubey.

Due to this it takes more time than the Premium Rajdhanis and Sealdah Duronto Express from Kolkata to Delhi.

Sometimes people become confused because according to Indian Railways Permanent Way Manual (IRPWM) on Indian Railways website or Indian Railway Institute of Civil Engineering website, the BG (Broad Gauge) lines have been classified into six groups ‘A’ to ‘E’ on the basis of the future maximum permissible speeds but it may not be same as present speed.

[1] The maximum permissible speed is 130 km/h except two small parts – 29 km long New Delhi (NDLS) – Chipyana Buzurg (CPYZ) part where Railway is trying to raise maximum permissible sectional speed to 130 km/h from 110 km/h and Jhajha – Madhupur part where trains pass through at a maximum permissible speed of 110 km/h.