All this talk about steering the games in favor of the Chiefs is funny (and crazy). The NFL loves parity, not dynasties. The Chiefs' fan base is small compared to other ones. If the NFL really wanted the most out of the Super Bowl, the games would be steered toward the New York and Los Angeles teams.
Despite a lot of fake news about Taylor Swift bringing female fans to the NFL, Nielsen, the ratings company recently found that she hadn't had much effect on football ratings at all. (If you have any daughters or know any young women, this wouldn't surprise you.)