Treat each weight as belonging to the mode or programme identified by the manual. They are not two quantities that can be added together to create a larger combined capacity.
Understanding this situation
The drying allowance may be lower and may vary by fabric programme. Read the programme table rather than relying only on the prominent numbers printed beside the product name.
A useful next step
Plan a continuous load to meet the applicable combined limit. If using wash-only capacity, arrange a safe separation before drying. This avoids interpreting a predictable capacity mismatch as an unexplained loss of drying performance.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.