Honestly I think GOOG (and some others) sometime interview people to fill time. I was contacted years ago; You want me to do what? What I wanted to ask was "what could possibly inspire you to think that has anything to do with me?" but instead I just said k thx bye. Not a effective way to hire, but a rather effective way to get focused attention. Even though I was kind of laughing, it certainly got my attention and got me thinking, which is great PR.
They're much too busy to do that. In fact they've recently shrunk the amount of interviews per candidate to free up time. The issue you're describing sounds like a recruiter that doesn't understand the subject that they're recruiting for.
