Better to run Nagpur- Dibrugarh via R-BSP-JSG-TATA-KGP-DKAE-RPH-MLDT-NJP-GHY/RPAN
For connectivity of Nainpur , Balaghat region to Northeast don't demand trains to south . Demand for connecting MEMU/ Exp or train to Mumbai only
Trains from NorthEast to South follow route of Kolkata trains