The Relationship Between Fairies and the Dead

The ecology of souls is two volumes. There's also a companion volume, which includes the in-notes, the bibliography and three appendices. I filled the first two appendices with encounters of people either aboard UFOs or during periods of heavy UFO contact where they meet the dead. And it's common enough to not be ignored. I wouldn't say that it's necessarily expected during what we would call alien abductions, but it's definitely not an outlier. If you broaden that sort of definition to include just general preoccupation with the soul, then yes, it's absolutely one of the points around which this phenomenon seems to orbit.