(b) the person has, if he or she has not received a response from the deputy head or the Deputy Attorney General of Canada, as the case may be, within a reasonable time, brought his or her concern to and provided all relevant information in the person’s possession to the National Security and Intelligence Review Agency, if the person’s concern relates to an alleged offence that has been, is being or is about to be committed by another person in the purported performance of that person’s duties and functions of service for, or on behalf of, the Government of Canada and he or she has not received a response from that Agency within a reasonable time.