How?? I do not think so.
12440 takes 17 Hours to reach Ranchi via MGS BKSC
and
12454 takes 18.30 Hours to reach ranchi via GHD.
Just 1.3 Hours more than the...
more... fastest one.
Now Lohardagai Tori completion will reduce the journey time at least three hours and since this will be rajdhani type train so the priority will be given to this train.
Therefore, this route will save 1.3 hour than MGS GAYA BKSC.