NASHVILLE, Tenn.—Nathan Chen had landed some of the most difficult jumps in figure skating, soaring through the air with a dizzying array of quads and flawlessly stringing together incredible combinations that left the crowd wanting more. Figures that he would faceplant on a simple step sequence. It didn’t matter, though. Nor did a mistake on one of his four quadruple jumps. Chen was that much better than everyone else at the U.S. Figure Skating Championships on Sunday, winning the free skate with 212.63 points and scoring 328.01 in all—good for his sixth consecutive title by nearly 26 points over 17-year-old wunderkind Ilia Malinin. “Silly things happen all the time. Am I to expect that? Probably not,” Chen said with a smile and shrug. “It was a dumb little moment. I just got wrapped up in that moment and lost my footing. It is what it is. Make sure I don’t …