Small reality check:
How many times does the phrase Anglican Communion appear in the Constitution of the Episcopal Church?
Answer 1. (in the Preface.)
How many times does the phrase Anglican Communion appear in the Canons of the Episcopal Church?
Answer 8. (In Title I: regarding a commission on International Peace and Justice, in the section on Missionary Jurisdictions, Congregations in Foreign Lands, and Churches in Full Communion; In Title III: regarding proficiency in the history of the Anglican Communion.)
Title I concerns organization and administration of the Episcopal Church and Title III concerns Ministry.
The phrase "Anglican Communion" does not appear in the body of the Constitution, except for the preface, or in the Canons on either Worship or Discipline.
Perhaps the massive level of identification of The Episcopal Church with the Anglican Communion is a bit overblown.
How many times does the phrase "Anglican Communion" appear in the Book of Common Prayer (Episcopal Church)?
Just for fun, how many times does the phrase "Anglican Communion" appear in the BCP of 1662?
Answer 0. (Of course...in 1662 there was no AC)
And in the Canons of the Church of England?
Answer 0. In the supplementary materials to the Church of England Canons there is a section on Churches in Communion with the Church of England. This includes a list of those churches in the Anglican Communion. It appears that the list of churches is not part of the canons because inclusion on that list is not finally dependent on act of synod. "Rule 54(5) of the Church Representation Rules provides that ‘if any question arises whether a Church is in communion with the Church of England, it shall be conclusively determined for the purposes of these rules by the Archbishops of Canterbury and York’"
So if the Anglican Communion is not mentioned in the official Book of Common Prayer of either church, and is not mentioned in any canon concerning either discipline or worship in either church, what is all the fuss and fury about?
It would appear that the Church of England has no essential concern for the Provinces, and the Episcopal Church mostly speaks to the matter of Provinces as subsets of its own church structure. "Provinces" related to the Anglican Communion is only mentioned twice in the Constitution and Canons of the Episcopal Church - in the preface and in the listing of people in title III whose orders are accepted in this church. There is no indication that the Episcopal Church considers itself a Province, as opposed to, say a "regional church."