Some vehicles have cutouts for the fuel pump to protect the engine from destruction due to low oil. The cutout disables the fuel pump circuit if there’s a loss of oil pressure. My '72 Vega had such a cutout. I don’t know if they were used on Caravans, but perhaps one of the posters with access to a maintainence database could check.
In short, it’s a longshot but possible that the low oil level caused a loss of pressure that caused the fuel pump to shut down and the engine to stall. But it’s a guarantee that if you don’t begin to check and maintain your oil level your engine is not destined for a long healthy life.