Nevin indicated that he could not accept the view of the Puritans that the Church remained buried for a thousand years or more, and then came to a resurrection in the sixteenth century. He also could not accept the position of Swedenborg that the Church which started with the apostles had run itself out, and that the future belonged to the new revelation appointed to take its place. If he had to choose between these two views and Rome, he would choose Rome every time. However, Nevin did not believe that these were the only alternatives. He believed that the main, but not exclusive, stream of Christendom runs through Protestantism, and will result in the course of time in a unity and union of all churches which serve Christ. He concluded, therefore, that he did not believe the solution of the church question would be found by the Reformed people taking a trip to Canterbury.
from Luther J. Binkley, The Mercersburg Theology pg. 75
I tend to believe like Nevin on this… until I look at the modern reformed church and ask “what kind of trip ARE these people (me included) on?”