12861 if extends KRNT then: KCG DEP 7:40, KRNT ARR 11:15 & must return at 14:30 PM to DEP KCG at 18:20!!
Tungbhardra Exp - KCG 7:50, KRNT 12:30 & KRNT DEP at 15:00!! No benefit of running concurrent trains when Tunga is SC-KRNT dedicated ICE & offers KRNT Link to KCG SF!!
You cant park two trains simultaneously and block 2 PFs at Station having 3 Pfs cap!! You can't move 2 Rake from PF to Yard/Branch/Loop & back to PF in 3 hours TAT!!