This reminds me of watching ground crew in 1980's Central America, having managed to somehow plumb an umbilical between a 727 cargo bird and a 737 Jurassic, proceed to attempt a start on the 3-holer with air from the 37. It worked. I recall more than a few rolls of speed tape and chocks for 'hose ballast & safety' being part of the 'rustic' process.