Halftime came and went, and in that time, the Chiefs’ offense began to look different. In the first half, the team executed a slow-paced, low-risk attack, if you can call it that, that mostly consisted of draws and screens. After halftime, quarterback Matt Cassel threw downfield more often. Runs went to the outside and began to break into the open field. It was different enough that, heck, maybe coach Todd Haley had done it — maybe this, in the season’s third week, was noticeable evidence that he had already wrestled offensive play-calling duties away from coordinator Bill Muir.