Presumably, a person holding up a phone live-streaming would be party to the conversation. If two people are talking at a party, and a third person obviously c

Presumably, a person holding up a phone live-streaming would be party to the conversation. If two people are talking at a party, and a third person obviously comes by within earshot, then the two people can either stop talking, or they can continue, but the third person is now party to the conversation.