A continuous programme includes the selected drying target or duration. Changing that choice can change the total estimate even when the washing portion stays similar.
Understanding this situation
The screen may show a combined figure rather than separate stage times, so compare the full selections when judging a difference. Other options or a changed permitted load can also affect the sequence.
A useful next step
Read back both wash and dry settings before starting. If the appliance behaves unexpectedly, report the complete combination rather than only the cotton programme name. Do not assume a longer estimate proves that a heating component has weakened.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.