The owner's procedure may require disconnecting the whole appliance. Food in the compartment that appears unaffected still needs suitable storage during that shutdown.
What the observation tells you
A freezer defrost can involve a long open period and water collection, while the refrigerator above loses active cooling. Leaving chilled contents in place because their door is closed does not automatically meet safe storage requirements. The reverse applies when extensive refrigerator work requires isolation.
A useful next step
Read the full procedure before starting, arrange separate chilled and frozen storage and follow the documented restart process. Do not assume two displays mean separate electrical isolation.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.