I don't think the gap I experienced was self-imposed. I was genuinely interested in the nuances of chess openings and my classmates were struggling to figure out what to do when their Candyland card had
two squares on it instead of one. (This isn't a criticism; the game is meant to pose just such a challenge to children the age we were.)
We just weren't thinking on the same planes. My mind made most connections so quickly and automatically that I didn't realize other people's didn't. I didn't know why I couldn't have a conversation with other children. I just knew it didn't work. They would just stare at me and then leave. I knew I could talk to adults fine, but I didn't have enough life experience to realize the other kids couldn't make mental connections like I could.
It was actually when my younger sister started school that it clicked. I knew she was a smart girl, but academic subjects were surprisingly hard for her. That was when I realized someone could be smart, but have to take time to learn certain things, or at least in certain contexts, and that the things they learned might have to be layered on top of each other slowly.
Prior to that, my only experience had been of someone's presenting an idea to me and my immediately understanding it. It's hard to relate to other people, especially children, when you don't have that conceptual framework.