I was wondering if this happens to any of you too? Do you meet other ND people in random ways?
Absolutely. In fact, it is on my "You might be autistic if...." list that I handed to my psychologist before I was diagnosed. Put me in a crowd of people,...we find each other,...I think it might be the abnormal eye contact thing. My theory is that there is a social phenomenon called "civil inattentiveness" and it has to do with how two people make eye contact as they approach each other. I learned about this in my neuroanatomy class that I took on-line this past year. What is supposed to happen is that we are not supposed to look at each other as we approach,...then, at the last moment, look up at each other, acknowledge each other, sometimes greet each other with a "Hello". Now, if you are an unknowing or untrained autistic,...like I was for decades,...two things are going to happen. You will look at the other person as you approach them,...if they are neurotypical, they will eye avert at the last moment,...because your eye contact is subconsciously threatening,...OR,...the other person will maintain eye contact,...a sign that you've met another unknowing or untrained autistic. Now, it didn't get into autistics that have been trained in civil inattentiveness or whether this phenomenon is also present in some neurodivergent individuals.
Not to confuse the matter, but if there are competing impulses, learned vs. instinctual behaviors, you can get some mixed results. Learned: "Look at people in the eye when you talk to them." Autistic instincts: Eye aversion when face-to-face. Learned: "Don't stare at people from a distance." Autistic instincts: A bit too much eye contact from a distance, to the point of putting off a "creepy" vibe. Neurotypicals will unconsciously or consciously sense this awkward conflict and sense something is "off",...whereas, a fellow autistic or neurodivergent might not.
The other part is that sometimes I might not read all the common microexpressions,...and I might not read people well,...for better or worse. Social naivety is awkward if I am,...but if a second person is,...we may find each other.
I've befriended many a person and gotten along great with individuals who others complain about for one reason or another,...usually ADHD-like, OCD-like, and other behavioral "quirks" that I simply overlook and pay no attention to.