ðə kwˌɑːdɹɪlˈæɾɚɹəl hɐz ˈɔːlsoʊ pɹˈuːvd ɐ stˈʌmblɪŋ blˈɑːk, haʊˈɛvɚ, æz ɪnðə dɪskˈʌʃənz bᵻtwˌiːn ðɪ ˈæŋɡlɪkən tʃˈɜːtʃ ʌv kˈænədə ænd ðə juːnˈaɪɾᵻd tʃˈɜːtʃ ʌv kˈænədə, bᵻtwˌiːn ðə tʃˈɜːtʃ ʌv ˈɪŋɡlənd ænd ðə mˈɛθədˌɪst tʃˈɜːtʃ ʌv ɡɹˈeɪt bɹˈɪtən, ænd bᵻtwˌiːn ðə tʃˈɜːtʃ ʌv ˈɪŋɡlənd ænd ˈʌðɚ fɹˈiː tʃˈɜːtʃᵻz, ˈɔːl ʌvwˈɪtʃ bɹˈoʊk dˌaʊn lˈɑːɹdʒli dˈuː tə ðɪ ˈɪʃuː ʌv ᵻpˈɪskəpəsi.
The quadrilateral has also proved a stumbling block, however, as in the discussions between the Anglican Church of Canada and the United Church of Canada, between the Church of England and the Methodist Church of Great Britain, and between the Church of England and other free churches, all of which broke down largely due to the issue of episcopacy.