Later-arriving reflections within the fusion zone do not create separate images.

Evidence

Within a time interval often called the “fusion zone”, later arriving sounds are suppressed in terms of their contributions to perceived direction, there is only one perceived sound image, although its character may be modified. The later arrivals add to overall loudness and contribute to sound quality. They are not masked. — Toole, Floyd E, Sound reproduction- the acoustics and…, 596

Categorization

• DEFINE: Defines the fusion zone: later sounds suppressed for direction but still contributing loudness and quality, not masked.