diff --git a/modules/mesh-delivery-builder/cmd/mesh-delivery-builder/main.go b/modules/mesh-delivery-builder/cmd/mesh-delivery-builder/main.go
index 9406b833..5f923264 100644
--- a/modules/mesh-delivery-builder/cmd/mesh-delivery-builder/main.go
+++ b/modules/mesh-delivery-builder/cmd/mesh-delivery-builder/main.go
@@ -422,13 +422,6 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
 		}
 	}
 	hub.OnBound(reads.atBind) // what a node's engine said before the consumer was bound (ADR 0668 §4)
-	reader.Start(ctx, js, cred, process.AwaitBucket(ctx, js, conn, firstViewsBucket, "builder_first_views reads nothing and builder_first_view_again is not heard", logger.Printf))
-	// Every part has registered: the hub pulls the module's durable. Where the consumer is not there yet the builder says so
-	// and binds it at a later change (heard.Writer; ADR 0615 §5).
-	_ = notHeard.Bind(eventsStream, sweep.EventArtifactsGone+", what wakes a floor, the registry seats' words, the views and manifest-reads-changed are not heard until the builder starts again", func() error {
-		return hub.Start(ctx, js, cred)
-	})
-	go func() { <-ctx.Done(); hub.Stop() }()
 	// The catalog half's entries as they come: a module's entry of a branch goes to the builder, and a key left building for a
 	// fingerprint no branch carries is closed (issue 1660) once the first view of every followed branch is in (never at the start:
 	// a holder of the seat that is down holds no other part of it).
@@ -439,6 +432,18 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
 		}
 	}
 	branches.Changed = half.Changed(ctx)
+	// A catalog revision the builder hears wakes a floor whose tags or requirements were silent (design 47 G A-119).
+	half.floor = func(ctx context.Context) {
+		(&floorWake{b: b, waits: floorWaits, logf: logger.Printf}).wake(ctx, versions.WakeRevision, "", "")
+	}
+	// All of the catalog half's wiring is set before the reader starts: its views are heard on the reader's goroutines from then.
+	reader.Start(ctx, js, cred, process.AwaitBucket(ctx, js, conn, firstViewsBucket, "builder_first_views reads nothing and builder_first_view_again is not heard", logger.Printf))
+	// Every part has registered: the hub pulls the module's durable. Where the consumer is not there yet the builder says so
+	// and binds it at a later change (heard.Writer; ADR 0615 §5).
+	_ = notHeard.Bind(eventsStream, sweep.EventArtifactsGone+", what wakes a floor, the registry seats' words, the views and manifest-reads-changed are not heard until the builder starts again", func() error {
+		return hub.Start(ctx, js, cred)
+	})
+	go func() { <-ctx.Done(); hub.Stop() }()
 	// A person asks a key's build again with builder_ask_again, which writes the reasks state (issue 1945): watched, as
 	// every other input. The builder asks again by itself without it.
 	// A state not on the bus yet at this start is watched once it appears (issue 1790).
@@ -497,10 +502,6 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
 			go func() { errs <- follow(ctx, qw, eachRead) }()
 		}
 	})
-	// A catalog revision the builder hears wakes a floor whose tags or requirements were silent (design 47 G A-119).
-	half.floor = func(ctx context.Context) {
-		(&floorWake{b: b, waits: floorWaits, logf: logger.Printf}).wake(ctx, versions.WakeRevision, "", "")
-	}
 	// The state engine-reads, new with ADR 0618 (issue 1790's kind): until it is on the bus each statement is kept in memory
 	// only, and builder_engine_reads answers nothing.
 	process.AwaitBucket(ctx, js, conn, engineReadsBucket, "what each node's engine reads is kept in memory only", logger.Printf).Ready(func(kv jetstream.KeyValue) {