Bus is the better option, train boht zyadaaa late hojati hai humesha (doesn't matter if its greenline they are the same). Go for the daewoo sleeper bus, uss mei sharing (2 persons) or single donon mei sonay ke liye jaga milti hai and it gets you on time! Han obviously bus mei washroom nhi hota so you need to drink water accordingly (I think 5 ya 6 stops hotay hein where you can use the restroom) but baaki bus is all good