I once had a take home API integration task that was time-boxed to 2 hours using the honor system. I handed it in but then the interviewers never mentioned it so I assumed nobody paid attention to it and was a bit annoyed. Then I got into the technical interviews and I was asked tons of questions about the APIs I was supposed to integrate with. It wasn't until after the interview that I realized the task itself was probably completely ignored, they just wanted to see what things I learned about the assigned API in a couple hours.
I know that has nothing to do with the question in the title, but I found it interesting.