Long back one such incident happened with my dad's friend at VSKP. I think it was about 6003 / 6004 MAS / HWH mail. Both train used to arrive at same time at VSKP. That uncle got into the train and got in the seat. The train moved on. He slept happily after getting in the train. At RJY he woke up and saw the Godavari river. He has to alight the train soon after that. He missed the train to HWH and luckily those were times when there was no much fights for seats in this train. He went to HWH in the next day train. I think as far as I remember its a story of 1997 - 98.