Yes. Indeed they do. As new immigranst to Canada we were shocked to know that we can not baptise our kids in other churchs or even have communion there. This was the major reason for us to bring over some priests and have an Orthodox presence in North America. As Orthodox we may not agree with every teaching adopted by other churchs but this does not mean we dismiss the whole authenticity of the church and its teachings. I am pleased to know that now we may receive communion in the Catholic Church and I believe in the Episcopalian Church. This does not mean that I accept every bit of their teachings unconditionally. It only meand that we have alot in common in the fundamental areas than non-fundamental differences.