The Pearl Harbor strike sat between fleet and task force

Did the Japanese force that attacked Pearl Harbor count as a task force if most of it came from the First Air Fleet?

It was a reinforced mission formation and therefore task-force-like, but its self-sufficient First Air Fleet core also gave it the organizational character of a fleet strike.

Kido Butai combined a standing First Air Fleet core with supporting units attached for the operation. Its mixed, mission-specific composition fits the practical idea of a task force. Yet the carrier formation was also organized and supported at a scale that made the strike resemble a fleet operation. Here, a fleet is a self-sustaining organization linked to wider infrastructure, while a task force is a self-sustaining formation for a mission. Pearl Harbor therefore illustrates why the boundary depends on organization and support, not merely on the ships present.