Almost 60 seconds wasted because fire engines took only pavement
Having driven many thousands of kilometres off-road, I can say with some authority that given a choice I would always take a paved road that is no more than twice the distance of the direct off-road route. Paved road is invariably faster and a known quantity. As soon as you leave pavement you can experience all sorts of surprises, even on a nice level grass field.
As for the time, from the videos posted one may verify that the first responding truck started spraying 45 seconds after the aircraft came to a full stop.