What happens after 6 months of a Reddit ban?

I have made a post where I ask the AI what that was about and it gave me the impression that you could do one appeal every 6 months. But really I've only been banned for 4. I see people talk about being banned before even one post from a year ago and the person's other account and you look at their account and it's still up. So what could be happening there? I mean I know admitting to it can get you caught. And there does seem to be some saying they got their account back.