This is certainly a unique thinking, going in a roundabout way. But then, IR has introduced trains that loop around even more[ think the extension of GKP-LKO VB to ALD]. This is a green for me.
Though personally I would have started it in afternoon [ reverse directions ] from LKO NR going via BSB. It would have taken roughly the same cumulative time. The logic for starting in afternoon is that a morning ICE already runs for Patna from LJN, albeit via a different route, so this train will be in...
more... direct competition to that one [ though this has way better timings ].