Is it illegal to plead guilty without telling the defense lawyer to find a lawyer on duty instead?

It's not illegal to find a lawyer on duty instead of informing the defense lawyer, because the defendant has pleaded guilty and the defense lawyer is not on duty, so it's not illegal to find a lawyer on duty instead of informing the defense lawyer, even if the defense lawyer is present, because the defendant has admitted his guilt and should be punished, and then it's not illegal, okay?