But SIr,there is no scarcity of tracks b/w BWN & HWH.Any time they can use 2 tracks for Down Line along with 2 Tracks for Up Line...So trains should hardly halt for PG/I/R.Only thing is that they may get slow to 20 kmph because of changing the tracks,for eg,from 1st line to 3rd Line or From 4th Line to 2nd Line.