 During Hygeberht's archbishopric, joint synods for the provinces of Lichfield and Canterbury were held, presided over by both archbishops. These gatherings were canonically irregular, as the usual procedure was for each province to hold its own synod. The reasons for holding joint councils are unclear; they may have been a manifestation of Offa's desire to supervise the entire southern church, or an attempt by the archbishops of Canterbury to retain some authority over the province of Lichfield.
