Mr Anirudh, there is an urgent need of TT revision for TN. Specially b/w Agra and Delhi. Take the example of recently much discussed comparison between AP and TN. Both these trains are super Heavyweight and have huge huge fans following. So to stop sentiments flooding, railways should keep separate TT without any OT between them. These two trains have only 10 minutes gap between their departures at Vijayawada and upto Agra this gap is maintained. Now this gap is to be maintained by railways upto Delhi so that mighty fans following of these two heavyweights couldn't come face to face . Thanks.