I saw a video of a police interrogation on Youtube where first the officer reads the detainee his Miranda Rights which includes he had the right to have an attorney present during the interrogation, and he could stop the interview at any point if he didn't want to answer any question
After signing this document the officer further asks him to sign another document that said the detainee voluntarily "waives all those rights" of his own volition, so that the officer can go on with the interview
What I don't understand is, is the detainee no longer allowed legal counsel after this point? Can he still stop the interview at any point if he doesn't like the officer's question?