Hi,
Going through the L3 code example, the notebook says:
- By not setting
allow_delegation=False,allow_delegationtakes its default value of beingTrue.
In the video of the lesson, Joao then shows how the QA agent requests more things from the Senior Support agent. At the beginning I wasn’t finding the delegation messages on my execution, but after a more careful exploration of the logs, I did.
In the process of debugging, I took a look at the docs of CrewAI, and very interestingly, for the attribute allow_delegation, it reads Allow the agent to delegate tasks to other agents. Default is False.
In other words, the default value was changed from True to False. To confirm this, I downloaded the source code for v0.28.8 (the one installed at the beginning of the notebook), and the docs used to be:
| Allow Delegation (optional) | Agents can delegate tasks or questions to one another, ensuring that each task is handled by the most suitable agent. Default is True.
I checked in more detail the CrewAI page, and the change was introduced in v0.60.0. I find it interesting because it feels like a major change, though it was not considered as such by the team developping CrewAI.
Anyway, thought it could be interesting to share! 
Best,
Julian