Interlocution
Interlocution , noun
[Latin interlocutio, from interloqui, interlocutus, to speak between; inter between + loqui to speak: compare French interlocution. See Loquacious.]
1.
Interchange of speech; dialogue; conversation; conference.
2.
(Law) An intermediate act or decree before final decision. — Ayliffe
3.
Hence, intermediate argument or discussion.