RailFans don't miss their train. Why? Because they go to the station HOURS before the actual departure of their Train - to watch OTHER trains depart. - Prince Maan

When introduced even 12394 had the time table like this only.
departed Ndls at 1820 and reached Pnbe at 0845 h. 14 h and 25 mins.. Whereas 12393 slowed after extension to Rjpb as from Patna to Ndls it still takes 14 h 35 mins but if you include Rjpb then it becomes 15 hrs. And 12394 further speeded up after adjustment in timings of Rajdhanis and made to travel Ndls to Pnbe in 13 h 25 mins and upto Rjpb in 14 h 05 mins..
Also that time.. VS used to depart...
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Pnbe at 1625 h and reach Anvt at 0800 h and Poorva at 1705 h from Pnbe and reach Ndls at 0810 h.. And poorva was faster than VS but now VS is faster..
Also a fact Pnbe Raj used to depart at 2150 h and reach Ndls at 1030 h and later timing of all these were readjusted after introduction of GR and Jan Sadharan..