The amount of frozen material affects how the cabinet warms, so official estimates distinguish different loads. They remain estimates, not guarantees for an individual event.
What the observation tells you
Door opening, room conditions and appliance design also matter. A half-full cabinet in a warm room cannot be assessed solely by borrowing the longest quoted time. Do not add room-temperature items during an outage in an attempt to make it 'full'.
A useful next step
Keep the door closed, record the interruption and use current official guidance and reliable temperature information. Make food decisions from the actual circumstances rather than a single headline duration.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.