Only in this loop, Harry was without them. If it had been very light at first, the feeling that his friends couldn’t understand him at all grew like a snowball. They really didn’t understand him: a moment ago they were stuck inside the burning school walls, mourning their family and friends, waiting for the next attack — how could they have looked at the events differently? The attack on Hogwarts and the fear of Voldemort was their immediate reality, while for Harry it was nothing but a glimpse of the past, more and more distant with each loop.