One of the potential annoyances of being a first-time head coach - especially one who has as little NFL coaching and play-calling experience as Doug Pederson - is that each of your limited on-record decisions will be scrutinized with Zapruder-like precision.
When Pederson took ownership of the play-calling on the Chiefs' final possession in their playoff loss to the Patriots, the time-consuming drive had already been dissected. But it was assumed at the time that Andy Reid, who had authored his share of snail-like marches, was the source of Kansas City's lack of urgency.
He ultimately bore responsibility as head coach, and it's likely his fingerprints were all over management of the Chiefs' final plays.