Trains and journey time between NDLS and PNBE is like the below one :)
Departure date - 9th March 2014 from NDLS / ANVT :-
12368 - Total journey time (14:40 to 12:35) = 21:55 hrs
12394 - Total Journey time (18:30 to 16:10) = 21:50 hrs
12402...
more... - Total journey time (20:10 to 17:50) = 21:40 hrs