Let’s start from the stereotypical Agile team using cards on a wall. Pairs sign up for stories and use picture avatars that they stick on the story card they’re working on.
Accountability is clear. If you want to know who’s working on something, look at the avatar. If there’s a story card with no avatars, it means no one’s working on it.
Let’s scale this up.
Multiple teams. Some dependencies. Unclear who is working on the dependencies. If you want to know who to talk to about a dependency, there’s no clear way to tell.
This is “Agile” how?