Marketing consultant, as used in this subpart, means any independent contractor who furnishes advice, information, direction, or assistance to an offeror or any other contractor in support of the preparation or submission of an offer for a Government contract by that offeror. An independent contractor is not a marketing consultant when rendering-

(1) Services excluded in subpart  37.2;

(2) Routine engineering and technical services (such as installation, operation, or maintenance of systems, equipment, software, components, or facilities);

(3) Routine legal, actuarial, auditing, and accounting services; and

(4) Training services.