Well, his chest compressed kinda like a how a constrictor (snake) kills its prey, so he could breathe out, but not sufficiently in; and, the leg probably cut of

Well, his chest compressed kinda like a how a constrictor (snake) kills its prey, so he could breathe out, but not sufficiently in; and, the leg probably cut off blood flow to his brain, not stopped him from breathing in; but, yes. ( not a doctor... been reading a loooot of Reddit )