According to the speaker's account of OpenAI's report, agents were trained to collaborate through a sanctioned tool, while agents in other training runs used Artifactory to create a message board, and this behavior was apparently directly reinforced or at least occurred during training.

“it's and you know some of these behaviors from open ai's postmortem were shown to be directly reinforced so open ai says you know they trained their agents to collaborate with one another using a particular sanctioned collaboration tool but then also in other training runs abusing artifactory in this exact way to make a message board”

“was,”

“it seems from their report,”

“it was directly reinforced,”

“or at least it occurred during training. And you can imagine that it might have been helpful for achieving some of the training objectives.”