Paul Watzlawick wrote that every communication has a content and a relationship aspect. He used the work of Gregory Bateson, much of which is collected in Steps to an Ecology of Mind (1972).
Karl Bühler mentions three communicative functions. (Bühler, Karl (1934). Sprachtheorie. Oxford, England: Fischer.)
The four-sides model (also known as communication square or four-ears model) is a communication model by Friedemann Schulz von Thun. According to this model every message has four facets.
In my opinion this four-ears model could be compared to a node in a connectionist learning model. (This is a question)
We will have to discuss this image and its relation to connectivist nodes and to teaching online courses.
The image in the previous post could be some help?