Sunday might be an opportunity to gauge how devoted Taylor Swift is as a football fan. One of the few pressing questions going into the AFC West matchup between the Kansas City Chiefs and Los Angeles Chargers is whether the megastar entertainer decides to take in the regular-season finale at SoFi Stadium, where she performed six sold-out shows on her Eras Tour in late July and early August. If Swift shows up, she might see something resembling a preseason game — with boyfriend Travis Kelce on the sideline.