I heard that somewhere in the US there were parts of a nuclear power plant being delivered by steam train. So that’s basically one steam engine supplying another! (^^,)
I can’t seem to find an article about it anywhere, so it might be an urban legend :(
Given that the first commercial nuclear power plants in the US were coming online in the late 1950s, that’s entirely possible. Steam trains were well on their way out by then, but there were still a few hauling freight around.
Fun adjacent fact: even when the British Empire had moved off of wind sails and into coal, those coal ships didn’t have the range to possibly cover the entire Empire. Coal stations were setup around the world, and the coal had to be transported by sail. The previous technology helps get the next generation technology going.