25B feature : Duplicate check query - DoB Match not reflecting after doing potential duplicate check

Summary:

We have added same Dob manually for an Ex-employee and external candidate who has different first name but same last name and same education, duplicate check didn't show any match so we tried 'check potential duplicate check" by searching the candidate last name. The compare summary displayed the match for school and degree but not for DoB. Can you please help us identify what could be the reason for the same?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable): 25B

Code Snippet (add any code snippets that support your topic, if applicable):