While you can say to justify that. I still think it is just an art to run trains on time. Jab 12004 NDLS-LKO Shatabdi 130 MPS mein, LHB coaches k sath, same route par, similar stops par ruk kar, agar NDLS-CNB 5 hr 10 min mein cover kar sakti hai, Poorva can definitely do it in 5 hr 48 min.