Pronounciation of divorce twice but not intentionally

If a husband, while explaining how talaq is given to a wife, pronounces talaq twice in front of his wife, will the talaq be considered effective (valid)?as he didn’t pronounce talaq intentionally towards his wife, he was just explaining how actually Talak is given. And that time he said and pronounce , if he gave One Talak, Two Talak and the wife stopped him and she told him that she understood. So Is their Any Talaq be considered??