Well, I’ve encountered a few people like this throughout my life, when talking to you it seems as if they’re looking THROUGH you and I find that extremely disturbing for some reason. Maybe it’s that I’ve been learned that eye contact is an indicator of sincerity and trust.
There has to be something wrong with them, right? Sometimes they snap out of is and look at you for a second, but they don’t BLINK. It’s like talking with a robot…. uh, like the uncanny valley IRL.