diff --git a/modules/mesh-delivery-builder/internal/build/askagain.go b/modules/mesh-delivery-builder/internal/build/askagain.go
index 072b6877..19e71e23 100644
--- a/modules/mesh-delivery-builder/internal/build/askagain.go
+++ b/modules/mesh-delivery-builder/internal/build/askagain.go
@@ -310,7 +310,18 @@ func (b *Builder) answer(ctx context.Context, l *lane, ask sdkstep.StepAsk, aske
 	var firstDecline time.Time
 	declines := map[string]string{} // node -> why it declined, the last
 	for {
-		step, why, err := b.waitOnce(ctx, ask, again)
+		// Each run that ended on a transport fault is said in the log and on the key's step; the bus gives the ask again (ADR 0664 §3).
+		seen := buildrun.WithStepSeen(ctx, func(st sdkstep.Step) {
+			if st.State != sdkstep.StepAgain {
+				return
+			}
+			said := fmt.Sprintf("run %d of %s on %s ended on a transport fault, given again by the bus at %s: %s", st.Run, l.module, st.Node, st.AgainAt.UTC().Format(time.RFC3339), st.Reason)
+			b.logf("%s: %s", key, said)
+			if err := asked.note(ctx, ask.Language, ask.ID, said); err != nil {
+				b.logf("%s: the run said on the key's step could not be written: %v", key, err)
+			}
+		})
+		step, why, err := b.waitOnce(seen, ask, again)
 		switch {
 		case errors.Is(err, errCheck):
 			continue
diff --git a/modules/mesh-delivery-builder/internal/build/run_test.go b/modules/mesh-delivery-builder/internal/build/run_test.go
index 0da72ac9..737f9789 100644
--- a/modules/mesh-delivery-builder/internal/build/run_test.go
+++ b/modules/mesh-delivery-builder/internal/build/run_test.go
@@ -779,8 +779,19 @@ func TestAFailedPublishOfACandidatesImageIsWrittenToTheKey(t *testing.T) { // re
 		t.Fatalf("candidate build = %+v", v)
 	}
 	r.bm.fails["ace/build_image_build"] = "push to the registry: connection refused"
+	// Issue 1748: a run of the ask that ended on a transport fault is said in the log and on the key, and is no end.
+	inner, log := r.asks.Answer, &logged{}
+	r.asks.Answer = func(a buildstep.StepAsk) buildstep.Step {
+		r.asks.Write(buildstep.Step{ID: a.ID, Node: "g14", State: buildstep.StepAgain, Run: 1, AgainAt: time.Now(), Reason: "lookup registry: i/o timeout"})
+		return inner(a)
+	}
+	r.b.Logf = log.logf
 	r.b.Module(context.Background(), "m", moduleValue(t, "modules/m")) // the merge: the trunk names the fingerprint
 	r.b.Wait()
+	r.asks.Answer, r.b.Logf = inner, t.Logf
+	if !log.has("run 1 of", "on g14 ended on a transport fault", "lookup registry: i/o timeout") {
+		t.Errorf("a run given again was not said: %v", log.lines)
+	}
 	v := valueOf(t, r.st, r.key)
 	if v.State != builds.BuildFailed || !strings.Contains(v.Error, "connection refused") || !strings.Contains(v.Error, "publish") {
 		t.Fatalf("build = %+v, want failed naming the publish and its reason", v)