What happens if you intervene and they still don’t fix the stand-up? Remember, the accomplishments and bumps are theirs, not yours. Agile works when they learn how to rely on one another. It has nothing to do with you looking good as a coach. So, if they do not improve, accept it for now, and instead gear up for ways to create the space for them to bring it up in the retrospective.
In the meantime, they will certainly pay the consequences of ineffective stand-ups. Don’t let those moments slip by. People often cannot see the relationship between cause and effect, so draw their attention to it. Capitalize on the moments when they feel a consequence to help them see the connection. You might reinforce the purpose of stand-up and ask anew, without bitterness, “Do you think this could have been avoided if the stand-up were different?”
Behavior change happens, but it happens slowly. It may take several tries from different angles before a team changes their stand-up behavior. Be patient. Keep trying. They will change when they need to, but only if you don’t shield them from the natural consequences that follow from poor stand-ups.
Source: Reference: Coaching Agile Teams, Lyssa Adkins, Addison-Wesley