Kansas City's Arrowhead Pride faced a nightmare in Week 15 with surprising outcomes. From Mahomes' struggles to defensive lapses, here are the 5 key takeaways. The once powerhouse Chiefs seem to stumble as questions arise. Despite the setback, fans are hopeful for a turnaround. The loss sheds light on areas needing improvement before the playoffs. With playoffs looming, the Chiefs must regroup quickly to reclaim their dominance. The unexpected defeat is a wake-up call for the reigning AFC champions. As the season progresses, the pressure mounts on Mahomes and the Chiefs to shine.