I am planning to come from jammu to delhi on 25 april. Uttar sampark kranti seems to be the most suitable train for me. However its waitlist from udhampur to NDLS is GNWL28 and has more chances of gettin confirmed rather than from JAT which is RLWL 62. if i book ticket from udhampur but board the train from jammu will the TTE give my seat to someone else? difference between both stations is 1hr 20mins....kindly advice..