Collaborative Learning

In this topic I reflected the benefits and restrictions of collaborative learning.
I think sometimes collaborative learning is a new hype but it’s not adequate for every topic or every group. I think the biggest advantages for me are the possibility to discuss a topic and to collect new ideas. You can get really creative and think outside your bubble. But to get a result like a presentation or a paper is far more time consuming in a group.
For teaching my idea is to use collaborative learning in a later state of a topic. I would start with some materials or videos so that everybody can get a first impression of the topic by themselves and use collaborative learning for a later discussion or to collect ideas about possible exam topics.

So what do you think is a good learning-scenario for collaborative learning?