[quote=1ke]It is a diocese within the Archdiocesan territory. Several dioceses are grouped in an ecclesiastical province and are subject to the authority of the metropolitan archbishop.
This is a very complicated relationship because it is not like the Archbishop runs the Suffargan Diocese through the Bishop, but that each Bishop is in control of his specific diocese. However in matters of Canon Law like Annulments the Archdiocese is the court of second instance. The Bishops gather for councils and collaboration with each other because they have something in common.