Yes, i travelled in it a 2 months back, and it departed from UMB at 2035 and it reached SZM at 2235, i.e 2 hours for flat run of 195 kms. avg speed of almost 100, and then it was slowed down post szm, cralwed through Sadar Bazar to reach NDLS at 2305. NR can seriously speed up its UMB-NDLS TT by 15-20 mins.
But when 12030 enters NDLS region, it has 12498 in front which reaches NDLS just minutes before 12030, so ultimately shtb is made to crawl post SZM.