It's not because of being special trains sir, regular run via Dhanbad undedi coal fires valla specials ani name cheppi vere route lo tipputhunaru.. and sc/hyb nunchi velledi takkuva delay thone veltadi mostly like 2,3hrs.. akkada start ayedi little delay tho start ayi gaya Mundu apestadu(don't know why) that delay goes on adding and 12hrs + daka veltadi ikkadiki vachesariki... anyway there's no dire need for those trains in that slot.. bpq varaku same slotas sc ngp express, and bpq-g-raipur route and bpq-ngp-g-r same slot for these trains so aa timing adjust cheyatanki bpq lo half an hr stop istadu