Their evangelizing mission in Moravia had by this time become the focus of a dispute with Theotmar, the Archbishop of Salzburg and bishop of Passau, who claimed ecclesiastical control of the same territory and wished to see it use the Latin liturgy exclusively.
A súa misión evanxelizadora Moravia convertérase en focu dunha disputa con Theotmar, o arcebispo de Salzburgo e bispo de Passau, quen reclamaba o control eclesiástico do mesmo territorio e desexaba que se utilizase a liturxia latina exclusivamente.