"They were in the middle of an auditorium, which is the opposite of private." I do not agree with you at all. If I am at a conference with a friend and we are

"They were in the middle of an auditorium, which is the opposite of private." I do not agree with you at all. If I am at a conference with a friend and we are sitting in an auditorium and he and are I chatting about something between us, regardless of whether you can hear it or not, IS a private conversation. Private here does NOT mean nobody can hear you. It means there are very specific people involved in the conversation.