I think this is more a confusion between
FMEA and risk management.
From my experience several manufacturers confuse the two. As a result, I often find lines from a (hazardous) situations that does not cause any damage to the patient, the user or the environment. Those should not be included in the risk analysis list but should, if necessary, be addressed in the FMEA process.
For my part, the AMDEC is a tool for doing the risk analyzis but is not the risk analysis.
Typically the case of forgetting a component in the box must be dealt with in the FMEA and give rise to a CAPA outside the risk management process.
PS: I like the answer of Jean_B