I had traveled on this train yesterday from ERS to AMPA.
It was supposed to leave ERS at 4:20PM but was delayed for a good 30 minutes due to the delay of incoming Kochuveli Amritsar express (12483).
It was again held at Kumbalam(KUMM) for another 30 minutes to ALLP-MAS express (16042)
Again at Mararikulam (MAKM) for 10 minutes for the incoming ALLP ERS passenger...
more... and of course, another 30 minutes, for the TVC Jan Shatabdi.
It eventually reached AMPA at 9 PM - a delay of 70 minutes. This delay is huge given that it reached ERS at the right time.