1. Exception is not DBRT alone; 2957 / 2958 (ADI / NDLS Rajdhani) is also not from / to the Gujarat Capital 'Gandhinagar (GNC) but only from / to Ahmedabad. And; Ahmedabad is not a sub / co-station of Gandhinagar Like we have Mumbai Cetnral / CSTM / Dadar / Bandra / Kurla of Mumbai or Nizamuddin / Delhi / Sarai Rohilla , New Delhi of New Delhi. Thus, only DBRT Rajdhani is not an exception. And hence National Capital is only a binding for Rajdhanis and not State Capitals.
2. Garib Rath and Rajdhiani's attract different classes of passengers. For one traveling in GR may be against the reputation, for other, Rajdhani may not be affordable. Yet, need be, a passenger...
more... can select any option in the given circumstances.
- S K Jain