Activity stream

I'm not sure if I fully understand what you mean by an activity stream like classic social. An activity stream to me sounds like a number of content entities that are displayed in a list. So, content entities need to be created (either manually or automatically) and the list display is probably created by a view.

If that's, what you're asking about, I'm not sure which role ECA would play in that scenario other than automatically creating content entities following some events that occur on the site.

You are right, I expressed myself badly. However, thanks to your answer I understood how to do it. Thank you, always kind.

Automatically closed - issue fixed for 2 weeks with no activity.