I think this harrasment occurs.due to two main reasons..
Firstly Trains unnecessarily stop for longer duration in ALD.Trains which dontve any loco change stops for 45-60 mts & those which have loco change stops for 2-3 hrs As a result platform.availability is always scarce.
Secondly there is auto-signalling b/w Bamhrauli Subedarganj ALD as a result. One after the other trains are queued up in signals & there is no way to.overtake.the slower ones which are in front. So the faster.ones need to wait till the slower.ones arrive @ ALD.