The following is from a great article from the blog Sacramentum Minimum:

Establishing unity between the Catholic Church and the Traditional Anglican Communion would likely have the same effect on Catholic dialogue with the Anglican Communion that unity between the Roman Catholic Church and the Eastern Catholic Churches has had on Catholic dialogue with the Eastern Orthodox Churches. At the very least, it would contribute to an atmosphere of resentment, in that the Anglican Communion would feel shunned in favor of a body of “Continuing” Anglicans which it views as schismatic. It could also lead to a vitriolic atmosphere of suspicion, such as we’ve seen with the Russian Orthodox Church, which seems to believe that the Ukrainian Greek Catholic Church in particular exists not for unity between East and West, but to proselytize Orthodox Christians.

Follow the link above and read the whole thing.