HWH arrival at 11pm is the same timings of 13054 SIURI HWH Exp.. and come on. arrival at 11pm isn't any issue for a Metropolitan City.
ER mostly runs Mail/Express trains on this avg speed only. See what they did with 13015/16 KaviGuru exp's TT.. gave 2hrs 40min extra time in 13016 and almost 80min in 13015 ..
In fact Avg speed improved from 37km/h to 41km/h in 13053/54 Express's case ๐