1:30 PM may be as far as I know it's a slot for crossing of AP SAMPARK KRANTI and Karnataka Sampark kranti. Many times I have seen these 2 trains arriving to KRNT at this time . I am not sure if it happens every time. Thanks for your suggestion. Should plan a return train from LTT to KRNT too keeping in mind those timings suit Hyderabad stations. Please give ur suggestions.