noun. Speech between two or more persons; conversation.

noun. Interchange of speech; alternation in speaking; dialogue.

noun. Intermediate discussion or argument; in law, an intermediate act or decree before final decision.

noun. Interchange of speech; dialogue; conversation; conference.

noun. An intermediate act or decree before final decision.

noun. Hence, intermediate argument or discussion.

noun. Discussion or conversation.

"And if the interlocution is dependent on some or all of that baggage then it's in the baggage that we should be looking for tests -- or, more to the point, for clearer definitions of what it is we're testing for."

interlocutor  

accordeon  chaat  confabulation  cuppa  duarchy  

conference  conversation  dialogue