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Admittedly, this is a fairly odd position for me to be in this week, but over the 12 seasons of covering Dallas Cowboys football, there have been several meetings between the two teams, so I have certainly grown accustomed to the oddness.
In fact,
I offered an essay on this back in 2007 if you care...
To me, the Green Bay Packers do not represent the "enemy", but for purposes of continuity, the title of the piece shall remain the same. Also, since I don't play for the Cowboys, any awkwardness would be for Tony Romo (another life-long Green Bay fan) to work through, at it appears he hasn't had any difficulty doing such a things. His numbers in his 2 games against Green Bay are a 2-0 record, 36-60, 569 yards, 569 yards, 5 TDs, 1 INT and a passer rating of 105.5. He seems pretty nervous.
In 1967, the Green Bay Packers finished a run of 5 World Championships in 7 years by beating the Oakland Raiders in Super Bowl II. It was the 2nd time the franchise had won 3 consecutive NFL Titles (something that no other franchise has ever done even once). Vince Lombardi left the franchise a few days later.
From 1968 until 1991 (24 seasons), the Packers enjoyed just 4 winning seasons (never consecutive). They made the playoffs just twice, and only once (1972) in a legitimate full NFL season (sorry, but making the playoffs in the bogus 1982 season with a 5-3-1 record does not impress anyone). They were an absolute mess, who had totally undone everything that Vince and the Packers dynasty of the 1960's had built. The Green Bay Packers franchise was irrelevant in the NFL, aside from being the punchline destination for players who angered their teams.
Then, in 1992, Ron Wolf was hired to be the GM of the Packers. He hired Mike Holmgren. They traded for Brett Favre by sending the #19 pick to Atlanta for him, and both teams felt like they won the trade decisively.
For the next 7 years (92-98), Holmgren, Favre, Wolf, and Reggie White helped design a model-franchise. 7 years, 7 winning season, 6 playoffs, 3 NFC Championship games, 2 Super Bowls, and 1 World Title. It was too good to be true. Their franchise QB had won the NFL MVP in 1995, 1996, and 1997, and was now just 29 years old. The sky was the limit for how many more could be won.
This was a time when successful NFL Coaches would take their success as a sign that they needed to do more. "Buy the Groceries" was a cliche Bill Parcells used, but it applied to many others - including Holmgren. Despite having one of the most successful stints an NFL Coach had ever had in such a short time with a team, he had to be the GM, too. The Packers had Ron Wolf already, so there was no opening in Green Bay for that title. Therefore, Holmgren resigned from the Packers to take an 8 year contract from the Seattle Seahwaks to be both Head Coach and General Manager of that franchise.
It didn't make a whole lot of sense, but Green Bay fans were not sure it was that big of a deal, since they still had the NFL MVP running the show. It was a very big deal. Holmgren knew how to coach Brett Favre. He knew how to harness him. And most importantly, Favre was interested in hearing what Holmgren had to say.