Consent does not have a different meaning in different areas of the law, consent is consent and that is where the threat exists. An interested party can apply that core definition potentially to any other facet of the legal system.
If consent is considered the exact same in all facets of the law, why can I go join a kick boxing class and consent to being punched in the face, yet, the police can charge my husband for assault, even if I tell them it's okay that he beat me? They are not viewed the same by the law, even if I consent to both. You know that. Consent is NOT viewed the same in all areas of law, plain and simple.