During User story splitting and estimation, you find that Development team is struggling to do so. What will you do?

During User story splitting and estimation, you find that Development

1.	During User story splitting and estimation, you find that Development team is struggling to do so. What will you do?
Answer» As a Product owner, I will see if there is any CHALLENGE understanding the large user story given by me or in understanding the business requirement. I will discuss and with them and will ANSWER those QUERIES. However, if the issue is because of incorrect splitting technique, I will inform Scrum Master to further facilitate it and plan for any GROOMING or training session.