Without more specifics from the OP It might be that the QA manager is too knowledgable. At one organization I worked at in the middle of career, I got supreme pushback that I couldn’t ‘issue corrective actions’ for nonconformances unless I found them randomly in a scheduled internal audit. No matter how major and consequential the violations were. So maybe it’s jus t because the QA MAnager is quite good and/or knows what is wrong and might ‘find’ things.