In the Denver Broncos 16-14 loss to the Kansas City Chiefs, there were 9 accepted penalties and no challenges. These numbers show low official involvement, a clear strategic choice that had both merit and drawbacks.
When to call a minor foul
The rules of football exist to accomplish three task – make the game safe, fun, and fair. Minor fouls, enforced as five yard penalties with no loss of down or automatic first down, pretty much exist only for the sense of fun or fairness. If the context does not provide an unfair advantage, its quite tricky when officials will call these penalties.