Yes they can change the slots but is it possible for JB to cover in 545 mins with 2 new stops which itself eats 10 mins of running time. Punctuality I'll be great concern and I'll effect HWH tiruchy which has to wait for signal for every station and also double dekkar. I ttavelled on Sunday it reached TDD at 1046 and even if it runs at good speed it I'll reach max by 1230 considering the speed restrictions from gundala to Vijayawada stations. 6 hrs running is required.