Akka context watch/unwatch happens-before relationship

Question

I have the following sequential actions on two actors, a parent P and a child C:

1. P watches C (context watch c)
2. P unwatches C (context unwatch c)
3. P stops C gracefully (c ! PoisonPill)

What I want to know is; am I guaranteed that P does not receive a Terminated event for C?

Here's a sample piece of code

class HappensBefore extends App {
  class C extends Actor { def receive = {} } 
  class P extends Actor {
    val c = context actorOf Props[C]
    context watch c
    context unwatch c
    c ! PoisonPill
    def receive = { case Terminated(child) => println("Oh Noes!") }
  }
  ActorSystem("test") actorOf Props[P]
}

Answer 1

No, there is no such guarantee.