Slack User Experience interview questions

First I had a phone screen with a recruiter. The recruiter was pleasant and answered all of my questions regarding the internship. Then the recruiter asked me to complete a research exercise within the next 3 business days. The exercise consisted of creating a 3-week research program that would address a future challenge to Slack's mission. I completed the assignment within the time allotted. I was told that the recruiter would contact me after the research team had time (a week) to review the exercise. The recruiter, unfortunately, never contacted me back or provided me with any feedback about my proposal.