Reminds me of an "interview" I had last year with a secure email company that gets mentioned around here a lot. I was given a coding task to do. Think it took around about a full work day spread over a few days. Wrote some code. Submitted it. Got an email a few weeks later to say they'd hired somebody else. No conversation about the work I'd done or the position it's self whatsoever. My only communication with a human was basically somebody telling me they were going to be sending me some work.
They originally sent me the work over Skype. I don't generally log into it Skype but I did in order to accomodate the way they wanted to chat (send the work). A few weeks after they told me they'd hired somebody else I logged into Skype again to find a message asking how to access the work I'd done from several weeks earlier. Even though I'd provided a link to it earlier on in the conversation. To this day I don't know if anyone even looked at the work that I spent a full work day doing.
Perhaps they just didn't like the work that I did. I wouldn't blame them, I wasn't particularly proud of it. But I had a lot to say about the work, the problems I had and the things I would do differently if I were to start it again. I wasn't given the courtesy of expressing those thoughts though.
The funny thing is, they approached me about the position in the first place.
I wont be participating in any "interviews" structured anything like that ever again.