Garibrath comes to TDD and EE at very odd hours and no onc can take this train. Duranto anyhow is a nonstop train till SC and no official booking. Only option is Godavari and gautami. NDD-BVRT section has Visakha, CCT-SC AC express and Narsapur express trains. So Godavari cannot be routed through Tanuku I guess.