Agar gd blacklist no 1 hai to SK to usse bhi gair gujri hai.gd run with e to e diesal with max speed of 110 whereas SK run e to e eloco with lhb max speed 130-150.ndls- pnbe double electrified high speed track.whereas gd run ndls-cnb high speed track only.ndla- HSR single track.compare the train now.gd never cancel .SK cancel so many times