I must share that I've had these encounters myself, including the NDE.
What I find in particular are that people of any one of these experiences can port-blank, be in the presence of yet another of these experiences and there's a residue, a feeing of magnetism or instant familiarity.
You may almost feel compelled to say, "You're one, aren't you?"
Following, there's a feeling of connectedness, as if we've stumbled upon an intrinsic wiring system of sorts and yet know the moment of recognition is that of a fleeting one.
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