Alright man. So, back in the day, my grandpa used to say that the GK train used to be like lightning fast but then it got a bit slower and turned into an Express train in the 90s. I'm not exactly sure when the Ratnagiri train stopped skipping Katni, but around the mid-2000s, it definitely made a pit stop there. Satna has always been a spot where train crews switch out, like a common thing for pretty much every train. But it's kinda strange how ET ALD has shorter crew distances compared to other routes. ET, JBP, STA are all crew changing spots over there. There was this one time when the LTT-ALD Duronto train was introduced and it just went from ET to STA without stopping at JBP for the crew change. And for the LTT-PNBE Superfast, they needed to switch crews at Mughal Sarai since it's a long haul.

Toh Coromandel ne 2141/42 LTT-PNBE ke liye prerna di, fir 2141/42 ne Sampoorna Kranti Exp ke liye prerna di, fir Sampoorna Kranti ne Sampark Kranti Express ke liye prerna di.

Toh saare Sampark Kranti trains ka peecha Coromandel Express se hua hai.