I might point out that it's not in the company's best interest to answer any questions about your performance. If an interviewer gives you feedback, and they sa

I might point out that it's not in the company's best interest to answer any questions about your performance. If an interviewer gives you feedback, and they say something wrong, it could open the company up to a discrimination lawsuit. You're better off asking questions about the business and trying to determine whether they're a good fit for you than you are deciding whether they're impressed by you or not. By assessing their business and their fit for you, you'll decide whether you want to accept any offer they may or may not decide to offer. If they don't offer, they weren't impressed, and they still shouldn't provide you much feedback because of aforementioned liability issues. If they do offer, then they were impressed, and you can ask those questions.