Which of these routes require train connectivity in Indian Railway? Comment below the reason and also what type of train. Also, you can comment below if any of the following routes can be implemented but with an extension.
MGR Chennai Central - Solapur
Chhatrapati Shivaji Maharaj Terminus - Thiruvananthapuram Ctrl
Vijayawada - Nilambur Road
Dadar Ctrl - New Delhi
New Jalpaiguri - Lucknow Charbagh NR
None of these. (Comment a route below)