Don't mind grandpa amplastbagholder - he will argue for the sake of arguing even when presented with facts proving he's wrong. Try to tell him the sky is blue, he will try to argue it's green simply because he believes nobody can be right about anything but him.
Will show just how stupid you are. Trading was taking place all sayy as is clearly shown on the chart. If there was a "crash" this chart would have had blank spaces for those hours that you and your fellow dumbell say trading had been halted.