Both Sides Detected It, Neither Escalated Concurrency and Escalation Failure in the July 2026 Autonomous Agent Intrusion

Public accounts of the July 2026 autonomous agent intrusion frame the response failure as a detection failure. Against the published forensic record — 7 primary sources, a reproducible pipeline — detection was not the binding constraint at either organisation. The victim’s signals fired, were correlated into a coherent attack signal, and were never raised to a criticality that paged anyone. The perpetrator’s own appendix timestamps a monitoring alert at 12:03 UTC and responders halting the runs 5h34m later, with 8 further compromise events inside that interval. We argue this failure — correct class, insufficient priority — satisfies every quantity current alert-screening formalisations define, and that security, unlike process-safety alarm management, publishes no target priority distribution against which it could be measured. We also report the arithmetic bound that makes the phase-extent statistics uninformative.