Matthew Stockman/Getty ImagesAaron Rodgers and Jay Cutler at Lambeau Field after Green Bay beat Chicago in the final regular-season game on Jan. 2. Packers at Bears Sunday, 3 p.m. Line: Packers by 3½ The Packers and the Bears first met in 1921, when the Bears were the Staleys, the N.F.L. was the A.P.F.A., and F. Scott Fitzgerald…