How does it matter ?? Are you going there to control the trains ??
As long as AP Express is running on time why do you care who or what is running ahead of it or behind ?
And even if it isn't, what'd you do ? Take the job of controllers ?? Go do controlling yourself ??
AP Express is a Normal Superfast...
more... with 130 MPS Schedule, that's it.
Chill, there are bigger issues to deal with than who overtakes who every now and then.
This used to happen during NCR vs ECR War, now it's just trivial at best.