Why the hell isn't the railway company considering bringing in a fancy-ass train between Chennai and Secunderabad?
A Vande Bharat train from Chennai to Secunderabad via Guntur in the morning would be freaking awesome in my opinion.
I bet it would be packed with passengers.

And this train could also serve as the opposite direction for the train from Tirupati to Vijayawada in the Nellore, Ongole, Guntur route.

The schedule could be something like this:
Chennai departs at 6.00 AM, reaches Nellore at 7.44, stays for a freaking minute, reaches Ongole at 8.49, stays for another freaking minute, reaches Guntur at 10.30, stays for a few minutes, and finally arrives at Secunderabad at 2.10 PM.
On the return trip:
Depart from Secunderabad at 3.10 PM, reach Guntur at 6.15 PM, stay for a couple of minutes, reach Ongole at 7.49 PM, stay for another couple of minutes, reach Nellore at 8.49 PM, stay for a freaking minute, and finally arrive back at Chennai at 11.20 PM.

Covering a distance of 707 km in 8 hours and 10 minutes, averaging at freaking 86 km/hr.

This Sambhar SF is the only proper dedicated super fast train and the only fastest on time arrival connection between Chennai and Hyderabad. Now it's becoming like a useless dish with its old train!

Stupid Southern Railway's division in Salem should arrange for a new fancy LHB train for this train and Yercaud. Southern Railway has no sense sometimes.

Charminar is a joke after its extension to Tambaram and it never arrives on time in Secunderabad, lol.

Bring back the stops for trains 12733 Narayanadri, 12603 MAS - HYB, 17015 BBS - SC Visakha, and 17232 NSL - NS Express at SAP, PGRL, and NDKD.