Obviously this isn't legal advice, but it's what defense lawyer friends have suggested if it ever comes up.
I think that popular video about "never talk to cops" mentions something like it too?
I assume if they don't wait, it helps your court case. They could always go with the "probable cause" argument, but again this can help your case if you can prove they didn't have actual cause.
Your threat model is imaginary, if they are robbers posing as cops, they wouldn't knock and wait patiently, they'd just serve you a fake "no knock warrant" (kick open your door and bust in with flash bang grenades).
I'm sorry, this comment is not necessarily a reply to you directly but to the thread in general--are we talking about the real world or some fictional TV show? Genuine question, is this something a "normal" HN reader should be worried about? Is there any evidence of such incidents happening ("kick open your door and bust in with flash bang grenades")?
Obviously this isn't legal advice, but it's what defense lawyer friends have suggested if it ever comes up.
I think that popular video about "never talk to cops" mentions something like it too?
I assume if they don't wait, it helps your court case. They could always go with the "probable cause" argument, but again this can help your case if you can prove they didn't have actual cause.