During 1960-1977/80 there used to be a train named janatha express from Howrah to chennai. My father told me that he boarded the train in late 50's and may be running from even before. It was later diverted to tirupati as HWH tirupati express when coromondal express was introduced. After HWH ypr express the train was shortened to Puri tirupati. The irony is that right from past 60 yrs the timings are the same now it leaves tirupati at 1030 then chennai at 900 stopping at all stations having more general and parcel vans with less reserved bogies.