Notes linked to an opportunity should only trigger workflows for that specific opportunity, not for all opportunities associated with the contact. For example, if a contact has:

--- Opportunity A: in ‘Action Needed’ (early stage)

--- Opportunity B: already progressed in the pipeline

Then adding a note to Opportunity B should not affect the status or workflows tied to Opportunity A. Each opportunity should respond only to actions (like notes) that are directly linked to it.