What a ridiculous question. I take communion with them. They are my brethren and sisteren (sic)... We love each other as family! It makes for an interesting dinner table.
The solitary belief that unites Oneness Pentecostals, Baptists, and Episcopalians, is the fact that they're not Catholic.
They don't even hold the doctrine of Sola Scriptura in common. But each man can define his own religion. Each man is his own pope. Rather than having one pope, there are millions.