No one ever voiced anything to me, I think I always slipped through the net because earlier versions of the criteria would not have fit me. But I do wonder if my parents suspected something and were in denial, they always said how I never talked when I was younger (they had this justification that it was because my brother talked so much that I didn't get the chance), but when I wanted to get assessed they were very resistant to it, they started to deny that I had been a late talker after having said that my whole life. I found my baby book and child health record, both well maintained up until about age 5, both had sections about starting to speak left blank (I do think I was speaking by 5, I think it is weird it was left blank, like they didn't want to have a record of it being so late). So I really could imagine if teachers or anyone raised concerns they would not of been open to it.
As for friends, I think everyone thinks i'm a little unusual, but I think the way I have adapted I have always made out everything was through choice, I am not very good at making friends so pretended I had no interest in making more friends, unable to form relationships so pretended I have no interest in relationship. So rather than appearing as someone who had problems I appear as someone who was a bit unusual through choice.
I am annoyed it never got picked up at university, you would think after 3 years of sitting alone in silence in lectures, seminars and tutorials it would flag someone up, but I guess things were different 15 years ago.
So yeah no one, least of all myself. Never occurred to me even once in 30 years because, despite all the awareness raising there still really is only a stereotypical view out there in the general populace.