MGS WDG-3A # 13411 segregated from Saharsa - Patna Kosi Express and MGS WAM-4P # 20664, waiting for their next duties. Kosi Exp which arrives Patna Jn at 1025 hrs has RSA with Patna - Hatia Super Exp which leaves Patna Jn with a WAM-4/WAP-4 at 1140 hrs.