Do you mean what communications theory addresses narrative?

Gloria Lee Mcmillan , my question focuses on how communication operate within narratives.

I could help if you define communication. You see, Communication is the field of which narratives are a sub-field. That is, narratives are a means of communication.

Rhetoric (as in Aristotle )says there are three parts: speaker, speech (narrative), and audience, for instance.

It depends which field you mean. In the list below you can see that different functions in communications theory are called by various names in the fields of Rhetoric,

Communications,

Linguistics, etc.

See: https://en.wikipedia.org/wiki/Communication_theory#Elements_of_communication

Elements of communication

Basic elements of communication made the object of study of the communication theory:[6]

• Source: Shannon calls this element the "information source", which "produces a message or sequence of messages to be communicated to the receiving terminal."[1]
• Sender: Shannon calls this element the "transmitter", which "operates on the message in some way to produce a signal suitable for transmission over the channel."[1] In Aristotle, this element is the "speaker" (orator).[7]
• Channel: For Shannon, the channel is "merely the medium used to transmit the signal from transmitter to receiver."[1]
• Receiver: For Shannon, the receiver "performs the inverse operation of that done by the transmitter, reconstructing the message from the signal."[1]
• Destination: For Shannon, the destination is "the person (or thing) for whom the message is intended".[1]
• Message: from Latin mittere, "to send". The message is a concept, information, communication, or statement that is sent in a verbal, written, recorded, or visual form to the recipient.
• Feedback

I think you mean where interaction occurs. in reply to this , i recommend you examine speech and thought presentation in narratives. i have a paper with this same title that can be of use.

Dear Colleagues,

The ambiguous form of the question leads to various interpretations. I hope we can help.