Sir,
The train that Depart from BPQ at 17:30 and reach WR at 21:10 i.e 51196 that train is taken forward after 2 hours of halt from WR at 23:00 as WR-BSL i.e 51198 which reach BSL at 09:00 and that Rakes are then after taken from BSL-DVL in evening train 51182 at 17:45. . .
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Sir ,the same happens with the return...
more... journey DVL-BSL 51181 that reach BSL at 10:10 . & then in Noon at 14:30 runs as BSL-WR 51197 , reaches WR at 21:00 and next morning again they are taken to WR-BPQ 51195 . Which depart at 06:00 am and reach BPQ at 09:45am...
Then same process continue as it goes to WR in evening as 51196.
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Sir, that's the reason why the board is painted with... BSL-DVL-BSL-BPQ-BSL.