The tests of A-249 and A-257 served the verb on one connection and asked it from another at once; the subscription was still in the holder's buffer when the ask reached the bus, so the ask was answered 503 no responders (13 of 300 runs with -cpu 1 before, 0 of 2000 after). The runner flushes after serving (runtime.go:352, :807); the tests now do as it does. Builds: design 47 G A-249, A-257 Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h