If something is mentioned that might be an impediment to marriage, ask the couple to speak to the officiating priest or deacon about the subject before your next session.
See IMPEDIMENTS.

When the couple returns to your next session, ask them if they have in fact spoken to the officiating priest or deacon. If they have not done so, then tell the couple that you must speak to the officiating priest or deacon. Be supportive of the clergyman's instructions to the couple.

The engaged couple must always have the opportunity to first speak with the officiating priest or deacon to maintain confidentiality.