I don't remember there being a caveat that it has to be on a shorter span of time, but simply spotting the man.
Well, if he's on a public thread obviously connected to him it's kind of time-wasting to report it. Everyone saw him when he established the lounge is back-up thread but no-one reported it because it would go without saying. That's a more extreme example but you get my point. Also, I was half-serious. If you want to you can, just a suggestion.