On my team, this glue work is the responsibility of the Product Owner. Essentially, it is the PO's responsibility to ensure that everyone on the squad knows wh

On my team, this glue work is the responsibility of the Product Owner. Essentially, it is the PO's responsibility to ensure that everyone on the squad knows what to do and how they should be doing it. If not, the PO calls a meeting and brings the right people together until a consensus is found. Having a full time PO on each squad lets the PO take up any work that isn't coding, but is blocking squad progress.