SES Intern interview questions

Complicated and lengthy hiring process for an internship position. 1st round with an HR recruiter, where they ask you some random questions. 2nd round with the manager, where they will give you an assignment and tell you to spend 7 hours on it . Apparently they seem to have more than enough applicants for the position, but still decided to test me with the assignment. The manager was rushed during my interview, telling me they had back to back interviews. When I presented my assignment, they didn't show any interest and rushed through it.