Choose one question
“Improve collaboration” is too broad to design around. “Which decisions get stuck between functions?” gives the team examples to prepare, perspectives to hear and changes to check. Ask each function for a concrete situation and separate what is known from what is being inferred.
Design the discussion
Make time for people who usually support the work without being in the foreground. A shared experience can provide a starting point if the debrief returns to the original question. Agree how people can participate without turning the session into an individual assessment.
Give the work a next step
Each agreement needs an owner, an observable signal and a review date. Back at work, examine what changed and what stayed the same. El Primer Castell can form part of this process; venue, participants and session requirements are agreed with each team.