The distinction is between the speed of propagation (e.g. how fast between a light switch flipping until lighting the room) and the physical movement of subatom

The distinction is between the speed of propagation (e.g. how fast between a light switch flipping until lighting the room) and the physical movement of subatomic particles through the wire. https://en.m.wikipedia.org/wiki/Drift_velocity https://en.m.wikipedia.org/wiki/Drift_velocity