Whilst AY-NDLS seems; the reverse direction would need this train to overtake the currently running Ayodhya/Faizabad Express in order to reach ~15 mins early. I doubt IR would do an overtake for two trains headed for the same destination just for 15 mins sake. Also, it's too crowded in the night time segment on the MB-BE sector.
Why not start this train earlier from NDLS, say at 1800 hrs and make it reach AY at 0500 hrs? That would resolve any conflict with other trains including it's sibling bound for Ayodhya...
more... and give people another, faster alternative.