KANSAS CITY, Mo. — The moment the football reached Bills wide receiver Gabriel Davis in the end zone, a celebration erupted on the visiting sideline inside Arrowhead Stadium, countering a stillness that had engulfed the majority of its spectators. Buffalo had taken a three-point lead against the Chiefs in last Sunday’s AFC divisional round playoff game, leaving quarterback Patrick Mahomes with just 13 seconds to answer. Seated in Section 122 at the stadium, Ben Miles turned to his younger brother, Marcus, and interrupted the silence. “This is gonna be a long ride home,” he said. The two younge…