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A QSO requires both parties to hear each other. Previously the map drew contact paths whenever A sent a directed message to B and B's locator was known from any message. Now paths only appear when both A→B and B→A directed messages are present in the decoded history. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Signed-off-by: Stan Grams <sjg@haxx.space>