I remember reading a blog entry from a recruiter that did exactly the second point: he gave a task to be done in 3 hours, a couple of candidates not only did th

I remember reading a blog entry from a recruiter that did exactly the second point: he gave a task to be done in 3 hours, a couple of candidates not only did the task but worked for more than 10 hours doing extra fancy that had nothing to do with the main task and telling the recruiter they overworked. They were hired, the recruiter loved the extra mile. What if a candidate is way better but cannot spend 10 hours in an interview? Is it actually a good trait to spend three times the time allocated in bells and whistles?