It's a bit mistake here chandigarh Ambala route has been upgraded with top speed of 110 and from Ambala to delhi it is 130 so in that section tsr of tejas can be upgraded from shitabdi express, as tsr of shitabdi express between Ambala Delhi is also 110 which can be 130 which will save 10 to 15 min.
12013-14 amritsar shitabdi has tsr of 130 kmph from NDLS to ldh already