Why is it that Anglo-Catholics (or Anglicans and others who are considered Catholic) who observe the Eucharist cannot receive Communion at a Roman Catholic Mass? What is required in order to do so?
Anglo-Catholics may consider themselves Catholics, but the Catholic Church does not. This isn’t a matter of snobbery; it is simply a matter of the Catholic Church remaining consistent with what it has taught and believed for over 2,000 years.
In the Anglican communion, it remains legitimate to believe that the sacrament is merely a symbol of Christ’s body and blood. Further, if one has not received valid orders, he cannot confect a valid consecration, and thus there is no Eucharist. Because of this and other theological differences in the way we understand the Eucharist, the Catholic Church has not normally allowed intercommunion with Anglicans. The Eucharist cannot honestly signify unity until that unity exists.