I'm finally able to read and post something in this thread (my mental ability to comprehend and recount this kind of thing is returning after a lousy bout of allergies.)
I'm glad whathehell posted about this as I'm also interested in such things. I even have a brief experience with telepathy as well
It happened back when I was still at university, getting my graphic design degree (which I don't use now) and had met an interesting young woman in one of my classes (can't remember now if it was one of the art classes or art history.) Anyway, we were talking out in the parking lot about spiritual matters and she admitted that she had various mental abilities, including telepathy.
Behind me was one of the entrance-roads to the university (it's kind of "secluded" in a wild/natural setting surrounded by bayous south of here.) I could hear someone driving towards us, but didn't bother to look. She "proved" her ability by asking me what I 'saw' in my mind then. I described a small white car, maybe an old Datsun, and turned to my left to watch the very same car as was in my mind's eye following the road as it passed our parking lot. She'd put that mental image into my head!
I've never experienced that kind of telepathy since. We never did anything else like that, either, and drifted away as friends.
Whathehell, one impression I got from your description was that of a portal versus a telepathic experience. It may very well have been that; I don't know. Your "whirling" sensation just makes me think of what it might be like to either look into, or go through a portal. There might be some DUers in ASAH that can better explain it if you cross-post this.
Thanks for sharing and letting me know about the thread