Rejected from job and then got a request to chat over LinkedIn?

I was recently

rejected from a position at a big tech company after the final round. One of the interviewers from the final round requested to connect on LinkedIn the same day that I got

rejected whic

I was recently

rejected from a position at a big tech company after the final round. One of the interviewers from the final round requested to connect on LinkedIn the same day that I got

rejected which I didn’t think anything of, but then DM’ed me asking to chat a few days later. I’m wondering how commonly this happens and why they might be wanting to chat? It feels kind of strange, but I don’t want to assume anything. I‘ve also recently accepted an offer for a different position, so I’m not really sure if I even want to go ahead with this chat. Update: Told the person I couldn’t chat and that we could connect over messaging if there was anything they wanted to talk about. They said that they could chat next week instead and mentioned that they chose another candidate. They didn’t explicitly say what they wanted to chat about. I’m still nervous about hopping on a call, because I’m fairly shy and not great at driving conversations/stopping them when I want them to stop.