FYKI,DNR Div doesnot have to run Magadh Exp only..There are n number of trains which run on right time in DNR..Like 12393 SK which mostly runs Right/Early in DNR..And regarding 12394 SK (if on time @ MGS),they manipulate its PNBE arrival by 15-20 mins only unlike NR..Other trains which are rarely delayed are DNR-LTT,DNR-SC,PNBE-Kota,RJPB-INDB etc