It's a wrong impression that there is no Co-ordination between SC and HYB divisions. The problem lies in Low lying Bridge after SC where the STPD cord line or say the SC - MED line n SC - KJZ line cross with SC - MED line above on the bridge.
Also, Lack of Space in SC for Maintainence, The Pit Lanes are ever full where as it's managable in KCG as of now with the Schedule that DD has. And also, to Run this KCG - GNT (via KZJ-BZA) DD, they had cancelled 1 trip of KCG - GNT - KCG DD (via NLDA) just coz of maintenance issues!!!!!