There's also the aspect that the Turing test isn't just one person and an AI, it's two people and an AI. One person and the AI both chat with the interrogator (

There's also the aspect that the Turing test isn't just one person and an AI, it's two people and an AI. One person and the AI both chat with the interrogator (the other person). The interrogator tries to guess which one is human. That's quite different from the interrogator vs the AI alone.