because government project? although I imagine this happens in non-gov settings too, this is just my experience.

Here's the reason: managers are so spread thin that they don't want to be in 5-10 standups all morning, so they combine around organizational structures rather than product(s)/deliverable(s). Another case of the software delivery matching org structure...

Of course the next question in line is "why is a manager involved in the standup?"

> because government project? although I imagine this happens in non-gov settings too, this is just my experience.

Why not split into smaller work groups? What's the advantage of 20 person teams?

organically this is what happens to actually get things done. but mind you, these small work groups are successful despite the large standups. life finds a way...