334.This section establishes the powers of investigators appointed under the general investigations power to require people to attend before them and answer questions, and to provide information or documents.  The investigators may only impose these requirements where they reasonably consider that the questions, information or documents in question are relevant to the investigation.  And they may only impose them on the person under investigation, or any other “connected person” as defined in subsection (4).  These limitations reflect the broad grounds on which the general investigatory power is exercisable.
Commentary on Sections Part Xi: Information Gathering & Investigations Section 171: Powers of persons appointed under section 167