In the return direction 13352-Allp-Dhn and 18190 ERS-Tata almost run one behind the other right from ERS till ROU with just 2 hrs difference....I think they can try the same in onward direction as well. Old TT of Tata-Allp, it used to reach Rourkela at 18:15. DHN-Allp is reaching around 7:45pm. There is a diff of 1.5 hrs. No harm in trying this option.