That’s a rather weird circular argument. If you are defining “churches” as “separate groups” obviously they aren’t in union with each other insofar as they are separate. However, there are various federations and agreements among various Wesleyan bodies. It depends on what group you are talking about.
What Protestant here is claiming such a thing? You’re arguing with a straw man.
Particularly funny is Chet’s conclusion that a “worse” result for Protestants is to rediscover Catholic teaching. Surely Chet doesn’t think that is bad. Why does he/she assume Protestants would think it was bad? From what perspective is it “worse” than the other alternatives?
Finally, it is clearly true that on various matters of theology and liturgy Protestants have developed and/or defended insights that are now being recovered by Catholics (communion in both kinds, for instance, or the practice of small Bible study groups, or an emphasis on justification by grace through faith–see Fr. Cantalamessa’s Lenten sermons on the subject from a couple of years ago). It is not true that Protestant doctrinal development leads only to further heresy or back toward what Catholics have always said. Sometimes it leads to insights that are fully compatible with the development of Catholic orthodoxy.
In Christ,
Edwin