For SWR to permit, following conditions should be compulsorily fulfilled:
1. Should be a circuitous route.
2. Departure/ Arrival time should be at odd hours.
3. Should pass through either UBL or SBC/ YPR or both.
4....
more... Should run on totally inconvenient timings at all intermediate stations.
KCG-VSG is not fulfilling sl. no. 1 above. I am not clear whether it fulfilling sl. no.4. May be not. Hence, SWR rejected the proposal KCG-VSG via GTL. Hapless passengers can take Amaravathi and wait at GTL, or pressurise SCR to fulfill conditions 1 & 4.