Snaggle wrote: but with each type of Out of body experience there's the OBE in the real world and an astral experience of other realm
Not sure what you mean. If you read carefully, most accounts don't talk about an OBE in the "real world". If you take a look at the accounts, you will find that they often describe subtle differences between the physical and the OBE space: your wallpaper or carpeting might be be different, furniture could be in different locations, and perhaps a window will be in a different spot. So the environment is very close, your friends will still be there, but you'll be seeing a non-physical version of them in an environment slightly less physical then the "real" world. It is apparently at a slightly higher "vibrational frequency".
For example- and this is really confusing,,, when you OBE and look down at yourself lying in the bed sleeping, I think the story goes that you are not looking at a physical body but a very similar non-physical representation of it, lying on a very similar representation of the bed.
The thinking is that there are a range of realms that exist and at increasingly higher vibrational levels which have decreasing similarity to the physical, and you can experience these realms in various states of consciousness. None of them are the same as physical. The physical is often described by witnesses as more "heavy" and unchangeable, whereas non-physical is "lighter" and more changeable as frequency increases.
Whether NDE take place in the physical world isn't made explicitly clear in what I've read. I'm assuming that like OBE, they take place in a plane very close to physical but perhaps not the same.
Actually some theorise that dreams take place in a realm as well, and not just in your brain.
I know it's confusing but that's how it is described in the accounts. I haven't had an NDE (hope I never do) but working on OBE, so maybe I'll have some first hand experience to share at some point.
In terms of "verifiable elements"- there have been examples of cases of verifiable data being experienced in OBE as well as NDE scenarios. Not sure what you mean about "no real value".
Of course this strangeness is one reason why people shun all of this. In my mind however, it isn't much more strange than quantum theory, but at least in this case there are many very similar first hand accounts describing what it is like.