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Super Bowl contenders: are the NFL’s unbeaten teams as perfect as they seem?

The San Francisco 49ers have managed a six and zero start despite facing severe obstacles, including a car crash for Kyle Shanahan, a controversial trailer park visit by Jed York, and multiple injuries to key personnel. Quarterback Brock Purdy has delivered impressive metrics, though mounting injuries in the receiving corps, including trouble for Mike Evans, threaten their postseason aspirations.

Meanwhile, the Kansas City Chiefs boast a spotless five and zero record following Patrick Mahomes's return from an injury and the impactful addition of running back Kenneth Walker III.

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