the shortest route would be via gmo-kqr which is taken by almost all the trains.
so the main reason for taking the route is providing connectivity from dumk - ndls iptn - ndls via pnbe. so with this iptn also got a connectivity for dumk pnbe and ndls.
other route i will try with garibrath route would be iptn-bksc-rnc-tori-dto-ddu-anvt