As the team that lost to team A beats team B who beat team A. Single data point correlation is weak sauce. History...It's not conclusive...But the data is enough to show causation. Home field is an advantage. It's why they call it an advantage. BYU never lost at home. There is a reason why both teams were much better at home this year. It's the same reason home field is an advantage every year in every sport. Utah got to play 3 of 4 with that advantage. BYU got to play once. Advantage Utah. Huge advantage. As it is in every sport since they started keeping scores.