I guess what I'm suggesting is that for most people who live in that part of Lake County, IL, the relationship with Kenosha isn't all that close. Akin to the fact that, despite Waxahachie is about 20 miles away from where I live in Texas, people consider it distinct from our community.
Now that may be different for Rittenhouse personally because of his family... but if you asked most people pre-Rittenhouse if they considered Antioch to be the same community as Kenosha, based on my experience, they wouldn't have.