At least in my cong, every time the CO comes to visit, all of a sudden there's a need to do a "shepherding call" on the inactive or "spiritually weak". I know this for a fact because my best friend's father has been inactive since before I met them (which was nearly a decade ago), and every. single. time. the CO comes, they stop by their house to check on him. He's the KH social pariah and they wouldn't be caught dead glancing his way any other day, but they put on show whenever the CO visits. Since attendance has sharply declined in my hall and they can't blame it on the new KH being built anymore, it seems like it's their mission to speak with faders.
Depending on your reputation/how long you've been out, they'll probably just ask if you have considered returning to the hall and leave it at that. They don't even pry with my best friend's father anymore. If you are more well-liked or if you just left, keep your responses brief and deflective. Yes, he's actually discussed this with me before (he's advising me for my fade hilariously enough)