This article which gives a phrase-by-phrase comparison of Overture 29 with the PCA Constitution shows there is nothing in the Overture that is not already in our Constitution (Westminster Standards and Book of Church Order) . Therefore, Overture 15 is needed to compliment and complete Overture 29.
Versions of this article are running on two sites, both with permission.
Note: the second half of this article is a line-by-line look at how Overture 29 lines up with the PCA Constitution