Dibrugarh pune via Bogibeel , rangiya , alipurduar, new mal, NJP, barauni bypass, patna, itarsi, kalyan, panvel to pune would be the best. (three days a week) , Dibrugarh - NTSK - Lumding - Guwhati - Golpara Town - New alipurduar - NJP - Patliputra - Itarsi, Kalyan, Pavel Pune (4 days a week with PM at CR - PUNE ) would be the best