The break is in the handoff, not the team
Inside a function, decisions hold. Across a boundary, they don't.
Work changes where two teams meet.
Inside a function, things move.
Decisions hold.
Work progresses.
Then it crosses a boundary.
What was clear becomes open to interpretation.
What was decided gets reworked.
What was moving slows.
The diagnosis stays inside teams.
Capability. Capacity. Performance.
The break isn't there.
It's in the handoff.