As per my father he used to travel from kolkata to hyderabad during his stay at hyd for an plant protection study on behalf of WB govt using 141/142 with changeover at Vizayawada for Krishna express.
Then its RT timings was 24 hrs 45 mnts.
141 hwh 17-55 Mas 18-40
142 Mas 08-10 Hwh 08-55.
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In fact during my South India tour in 1990 Coromondel exp didn't stop between kgp and bbs running via naraj skipping CTc.
In that year it got experinental stoppage at Khurda Road.
Still it maintain its premium culture stopping only at rajahmubdry and bza.
But politics have nailed it in Odisha.
Still I hope for the revival of coro s legacy. Like conversion of old Darjeeling mail with 16 stoppages to present new avatar with 4 stoppages only.