First thing..DDU-BSB slow rhega hi hmesha..It's like TDL-AGC wala hisab wala..
Speed dkhni hai toh BSB-LKO dekho..
And fastest Rajdhani hai in between BSB-LKO which covers 283 km in 4 Hours at 70+ Avg Speed..
And also mein aapke 03237/39 wale ques ka answer derha tha k SLN wali ko itna time LKO timing match krne k liye diya gya Faizabad wali se..