Nothing is settled until it is settled right.
An important part of giving constructive feedback is facilitating the recipient's acceptance of the feedback you have given. This is an important step in the constructive feedback process because until a recipient accepts the validity of the feedback they have received, they are not motivated and not fully committed to changing their behavior. Anticipate a recipient's response and be prepared to facilitate their acceptance. Restate the feedback and ask whether they believe the feedback is valid. If the recipient continues to respond defensively, stop the process and provide direct, immediate feedback on their defensive response.