// The call that seeds the connection pool.
    listener.removeUpToEvent(CallEnd::class.java)

    // The ResponseFailed event is not necessarily fatal!
    listener.removeUpToEvent(ConnectionAcquired::class.java)
    listener.removeUpToEvent(ResponseFailed::class.java)
    listener.removeUpToEvent(ConnectionReleased::class.java)
    listener.removeUpToEvent(ConnectionAcquired::class.java)