The Bears defense registered multiple key stops, too.
Rookie cornerback Terell Smith intercepted Jordan Love in the red-zone, setting up Chicago's offense for its first touchdown in four weeks — a 7-yard Roschon Johnson carry that reflected how Williams' mobility challenged the Packers defense.
Chicago would again stop Love one yard short on fourth-and-goal, and still later on a two-point conversion attempt with 2:59 to play.
But the progress Williams and Co. showed for much of the day wasn’t enough.
Even after Williams cobbled together a masterful final drive, including a 21-yard completion to fellow rookie Rome Odunze on third and 19, the 46-yard field goal attempt by Cairos Santos was blocked.
The Packers kept their six-year streak alive, a 20-19 win their 11th straight in the rivalry.
This developing story will be updated.