I manage someone who says they are “probably” autistic, but no formal diagnosis. They are quite quirky, bright and good at their job, but absolutely do not “get” social cues. For example they will drone on for hours about a niche subject that is only of interest to them, and don’t get that people are bored. They don’t have “two way conversations” - it’s a monologue, so the other person can’t get a word in edgewise and they never ask questions to get a two way flow. At social functions (we go to a lot of social functions, some quite formal), they don’t interact with other people, and don’t seem to understand when the event is over and they have to leave - eg pouring more drinks when everyone else has gone.
This behaviour will almost certainly hold them back in their career. But how to approach it? Via OH or HR? I don’t feel equipped for the conversation.