diff --git a/go/process/event_hub.go b/go/process/event_hub.go
index 14fe1a4..dd37a5b 100644
--- a/go/process/event_hub.go
+++ b/go/process/event_hub.go
@@ -59,7 +59,9 @@ func (h *EventHub) Handle(pattern string, handle func(jetstream.Msg)) error {
 
 // OnBound registers f, told each time the hub binds the module's consumer, with when the bus made it. A consumer is made
 // from now (ADR 0443), so an event said before it was made is not delivered to it: a part that took a picture before
-// that must ask its owner again (views.Follower.ConsumerMade). Register before Start.
+// that must ask its owner again (views.Follower.ConsumerMade). So every handler of an event that ends a kept call's wait
+// (a callee's "my state changed") also registers here the call it makes on that event, made again once at each bind
+// (novox/hq ADR 0668; issue 1966). Register before Start.
 func (h *EventHub) OnBound(f func(created time.Time)) {
 	h.mu.Lock()
 	h.bound = append(h.bound, f)