Alumni interview after submitting application... will it help my chances?

Hi!
So CMU offers alumni interviews until the end of February. In the application, there is an optional supplement asking you to talk about your interview experience but since apps are due this week, I won’t have time to interview before then. Will having an interview after submission still help my chances of getting in at all? Will admissions even know?

Use the supplement to report that your plans for interview is in the works and you are looking forward to talking with your interviewer.