Whether that deceptive celestial display was meant to represent Dunk’s internal point of view or was simply a trick of the camera, it is reminiscent of the Oscar Wilde quote “We are all in the gutter, but some of us are looking at the stars.” This week’s episode of “A Knight of the Seven Kingdoms” — which began streaming on HBO Max a few days early because of the Super Bowl — illustrates that however low his circumstances, Ser Duncan the Tall has loftier vision than almost all of his supposed betters.