An interesting episode of Radio 4's "All in the Mind" last night talked about eye contact and colour perception.
It didn't give all of the "rules" / expectations about eye contact but it did give me a glimpse into a world that I feel that I have no experience of; that of "connection" with others via eye contact. All I get from eye contact is a feeling of too much intimacy, feeling intimidated and anxiety over whether I'm doing it right or enough. Apparently other people love it!
Anyway - interesting episode:
https://podcasts.apple.com/gb/podcast/all-in-the-mind/id643660675?i=1000437448082