Kyle Shanahan began preparing for Packers during second quarter of their wild-card game vs. Cowboys

Tale as old as time: The Dallas Cowboys exit the playoffs early. The No. 2-seeded Cowboys were defeated, embarrassed even, by the No. 7 Green Bay Packers in Super Wild Card Weekend, losing 48-32.

The San Francisco 49ers earned the No. 1 seed in the NFC and got to watch the rest of the teams fight it out in the first…