Yes. Normal sound immediately afterwards does not prove the object passed safely or that no damage occurred.
What the observation means
The item type and timing help the service team advise on the appropriate next step. Do not deliberately perform repeated flushes to establish whether a problem will appear.
A useful next step
Explain the event accurately and follow model-specific advice. Keep unsuitable material out in future. If running, drainage, noise or leakage changes, stop using the connected system. Do not open the casing to reassure yourself that the object is absent.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.