If trains will be diverted, time slot between danapur to barauni and in total Delhi to destination have to be kept same, otherwise long distance passengers comfortable time at starting stations and last four five stations will not remain comfortable , also there will be requirement of additional racks.
Therefore to keep same time slot between danapur and barauni , these long distance trains should be run through sahpur patoree. At least till the time hajipur muzaffarpur doubling not takes place.