As per adv about change of schedule due to closure of of Dhanbad Chandrapura on Times of India, Kolkata, ER twitter page in June 2017, the schedule of 12020 of DHN after (15.6.17) closure was 5 min later than 10.5.18 and ASN was same as on 10.5.18 when I’m writing. In the adv Pradhankhunta pass was 18:05 after closure – so, it maybe not before 18:00 on 10.5.18 when I’m writing, which is after interacrive TT. slack time may be added for surface crossing with 13049 and 15047 or any other of its absence at STN like X like crossing at T shaped road crossing, it might be rectified on commencement of last TT session which might not be possible interim TT between commencement of two sessions So, slowing down may not happen between DHN - Pradhankhunta for 105.18 when it is being written.