I doubt you did watch it a couple of times if you don't think Sharpe saw it. His reaction was immediate.
Intent is the issue and that looked obvious enough, should not matter if he missed.
But they have to be contestable, we need better kicks and a far better chase. Our wingers and centres simply don't work hard enough at creating pressure at contact and chasing. We need the essence and competitiveness of Tom Carter ((without the niggle and more talent) or the ABs backs) throughout the backline.
Is he? does he have a chip-kick-in-own-22 problem?