diff --git a/replays/register.go b/replays/register.go
index b856a8d..5f5347e 100644
--- a/replays/register.go
+++ b/replays/register.go
@@ -166,6 +166,16 @@ var Register = []Replay{
 		Module: "modules/mesh-delivery", Package: "./cmd/mesh-delivery", Test: "TestARecheck",
 		Files: []string{"modules/mesh-delivery/cmd/mesh-delivery/recheck_test.go",
 			"modules/mesh-delivery/cmd/mesh-delivery/fakes_test.go"}},
+	// Two order rules ordered one pair both ways (2026-10-08): the controller's member moved the build agent,
+	// which builds the node-engine, and the node-engine goes before the controller, so the group
+	// feat/a-machine-joins-through-the-tunnel was refused as a cycle and merged by hand. A test in the
+	// controller, using only what orderOf had before its fix, laid over the commit before it.
+	{ID: "R309", Issue: 309, Kind: InRepository, Repository: "mesh-controller", Fix: "c5a2edf",
+		What: "a delivery group of the controller, the node-engine and the lab, each ready, was rejected: built by " +
+			"put the controller's member first and engine before controller put the node-engine's first",
+		Asserts: "rules that order one pair both ways are resolved by precedence — built by over engine before " +
+			"controller — and the group is ordered, the controller's member first",
+		Package: "./cmd/mesh-controller", Test: "TestReplay309", Files: []string{"cmd/mesh-controller/replay309_test.go"}},
 	// Not a core incident, and the first of its kind: a module's. The crash loop was found by a person
 	// reading the agent server's log for another reason (issue 268); research 032 measured it, and ADR
 	// 0240 makes the node-engine judge it and the gate fail it.