No, not really. It's not an emergency response. They probably did not request it right away as they expected to restart the engines. Once it was requested, they had to find someone available to operate it who had to go get it, perhaps check the fuel and fluids, et cetera, et cetera. Depending on the details, 40 minutes could actually be considered quite quick.
To my reading, it is a bit ambiguous when that 40 minutes starts, but so what? I am still not surprised even if it took 40 minutes from the time it was requested for the reasons I already stated.
