Why do those experiences indicate the presence or non-presence of an afterlife?

This claim from Ayer -- how do we make the leap from these experiences existing to being evidence of a life after consciousness?

> On the face of it, these experiences, on the assumption that the last one was veridical, are rather strong evidence that death does not put an end to consciousness

for some it's impossible to witness death. We get forced to sometimes see someone else's lifeless cask, but our own becomes impossible, as our very own worldline/probability trees branch before witnessing what others see as their objective reality; someone else's death. and this won't make any sense to anyone that doesn't already see this occurring, so it's just like an ouroborus of a string of jokes, each punchline becomes the begining of the next joke.