I don't believe for a minute that this female bank robber is talking to a co-conspirator or just using the phone as a prop. Imagined conversation: "Betty, you wouldn't believe what this teller is wearing. It's so tacky. And that hairdo! Yes, I can meet you for lunch in about half an hour. Yes, I'll pay this time, no problem. Hang on a sec. Hey, Hon, just the 10s and 20s, all right? Skip the small stuff. Betty? I'm back. Bill? No, that's over. I told him about my little part-time self-employment, and you know what he said? I should give him half. The nerve! Look, can I call you back in a minute? These people are getting nervous, and I don't want to push my luck. By the way, did I tell you about . . . ?"