The run operator and the reviewer need not be the same person. Choose a reviewer who understands the audience, can judge whether the output meets the original goal, and can stop distribution when it does not.
Write down the approval criteria and a backup owner for absences. Give the reviewer access to the source and failure log, not just the polished result. If the output contains sensitive data, confirm they are authorized to inspect it.
Who can confidently approve or reject the finished output?