If, in any investigation or proceeding under this Chapter, a person properly claims privilege in respect of any information –

(a) the Supreme Court, Tribunal or Board may require that person to disclose the information; and

(b) if any information adverse to the interests of that person is then disclosed, no question or answer relating to that information may be used in or in connection with any procedures or proceedings other than –

(i) those relating to the complaint concerned; or

(ii) those resulting from a report or disclosure under section 649 (Duty to report suspected offences).