The adversaries. Each one is a set of knobs and a goal it will not tell the agent about.
Picks up between meetings. Will give you ninety seconds, not five minutes.
Answers the question you were halfway through asking. Barge-in on almost every turn.
Second-language English on a lossy line with an open-plan call centre behind them.
Been burned by recruiters before. Treats the screen as an interrogation in the other direction.
Knows it is talking to an LLM and is trying to talk it out of its instructions.
Answered the phone and then stopped participating. Every reply is one word, six seconds late.