On final approach, the pilot, who was in third position in the landing sequence, was focused on the movement of the aircraft ahead of him. His misconception of these movements led him to consider the possibility of a go-around on final approach. However, he did not ask the controller for assistance in clarifying the situation and decided to continue the approach.
When he was cleared for landing on very short final, he was still focused on the aircraft on the ground that had just cleared the runway. He did not flare and the nose gear hit the runway hard. This was followed by a series of bounces during which the nose gear collapsed.