IT appears that vikramshila is mostly on time. but when it leaves from pnbe at 5 to 6pm mostly it disturbs SK almost throughout, If u will check the profile of SK and vikramshila through pnbe to ndls , SK is always just a station or two behind vikramshila and that delays SK to some extent and in turn promotes earlieer overtake of pnbe rajdhani. Earlier rajdhani used to overtake SK at tundla but these days after cnb/kanpur or even before ald jn it is overtaken.
So all this is coz of vikramshila....if they can reschedule vikramshila after SK it wld help in improving UP line