The fact that people form networks is probably not a very unique idea but rather a more commonplace one.
Evolutionary research talks a lot about groups, group activities, and joint actions but little about networks.
The focus is on the individual that we encounter in its archaeological remains and whose linguistic and cultural abilities are discussed within the contexts of being an individual and as part of the social group.
The concept of the network goes beyond the concept of the group, in that it addresses the individual group members in their individuality as well as their different relationships within the group.
Michael Tomasello talks a lot about the group and common activities and the common intentionality of prehistoric peoples. However, his argument appears to me to lack differentiation into distinguishable individuals with networks.
When determining the group size and the explanation, Robin Dunbar shows that he considers the number of relationships within the group without thinking about a possible network.