The two positive specimens do not compose.
CPB: voluntary platform costing, four decades uncaptured, authority from an accuracy record and a convention. No statutory response duty. The page's own rule in §IX is that frameworks without a statutory hook on a decision have moved reporting, not budgets. That is CPB's situation, and it is the one that survived.
Wales: a statutory hook, one cancellation of the M4, ministers as closer. The page says this validates cost and does not test a threshold. The Authority's operating mode is pass on ordinary terms after a stated override.
The stacked object is hook plus full lifecycle plus survival. Neither row has it.
They are different rows on purpose. CPB is the method-and-persistence fragment. Wales is the hook fragment: a finding that had to be answered. The Authority is the composition — CPB-like open method, Wales-like standing, plus the lifecycle the Commissioner does not have.
§IX's beyond-GDP line is about indicator frameworks with no decision hook. CPB's audit of election platforms attaches to documents parties submit. That is a convention with cost, not a null.
Then the composition is the untested claim.
The missing cell is a body with a mandatory response duty whose finding was overridden on ordinary terms and still imposed cost: the bill rewritten, delayed into a different object, or later reversed — not a body that was never overridden because it had no duty (CPB), and not a body whose famous case is a ministerial stop (Wales).
If that cell is empty, "informational authority with constitutional weight" is two specimens that do not share an operating mode.
The Wales cell is also selected on the attractive path. The design's common path is proceed-despite-finding. The visible prototype is the path where ministers cancelled the road after the case was on the record. Cases where the Commissioner's case was on the record and the project proceeded anyway would be the cost test. They are not in the essay.
The page already knows what to ask: a beyond-GDP framework that moved a budget. Ask the parallel of this architecture: a judgmental override duty that moved a bill the majority still wanted.
Wales is the opposite cell — the closer already did not want the road once the argument was on the record. Until the wanted-anyway cell is filled, the hook has been shown to work as a recorded argument for a decision the ministers were willing to take.