If everything exists for an instant only, as with [Sautrāntika](https://en.wikipedia.org/wiki/Sautr%C4%81ntika) Buddhism, then doesn't that mean everything dies at the exact same time it is born? Isn't that impossible?

I am not asking for an analysis of the sutta pitaka, but to understand how anyone could hold those two positions. Did it ever come up in historical debate?