(1) Reason for red flags are because of roundabout route. Bangalore-Chennai is 6 hours only by direct route.
(2) However, this train gives direct connection to places like Dharmapuri, Hosur, etc. from Chennai, Tambaram, Chengalpattu, Melmaruvathur, etc.
(3) If Hosur can be a terminal it can be terminated there itself. Otherwise, it has to be taken to Bangalore.
(4) Day train will be...
more... better for connection train. Night service is mainly for end-to-end passengers.