No round tripping as in case of 304 via sre route . You may very well reroute dn Return pair train via umb kun pnp snp for Delhi side that too in early morning so that u get a much needed train between 03.00am to 06.00am when there is not even a single train ex kun for Delhi dn side for full 3 hrs at a stretch coz there are 3 trains Usk , Vskp-asr, hsx-dli but Filhaal they hv no halt at kun .