The committee chairs report to the Vice President, who is one of five Officers and a member of the Board of Directors. The VP relays the committee reports to the BoD and the general membership during regular meetings of both: our Bylaws stipulate committee reports as an order of business in its Rules of Procedure, which apply to "regular meetings of the Association." (We take that to mean regular meetings of the membership and the BoD.)
Our bylaws differentiate between Officers and Directors and we generally refer to the Officers as the Executive Committee, however that may be a misnomer as our Bylaws give the BoD "the right, power and authority to exercise all such powers and do all such acts and things as may be exercised or done by the Association" but do not have similar language pertaining specifically to the Officers. Officers have prescribed duties, however they are subject to the approval and/or direction of the BoD.
In practice, the VP (and often a committee chair) will present committee reports to the BoD at its regular meetings. When the committee is recommending specific actions the BoD will vote on whether or not to follow the committee's recommendations, and then report as much to the general membership during its next regular meeting. Technically the general membership can move to reverse the BoD's decision, so the BoD doesn't often act until after the committee reports and recommendations have been accepted at the general membership meeting. As an organization we often struggle with the lengths to which the BoD should go without express approval of the general membership, despite the "right, power and authority" noted above.
So if committees report to the VP, and the VP is an officer / member of the BoD, is the BoD the parent assembly of the committees?