Complex sentence: Zaharija was either captured by the Bulgarians en route or by Pavle, who had him duly delivered to Simeon I. In either way, Zaharija ended up in Preslav.
Split into simpler sentences: Zaharija was either captured by the Bulgarians en route or by Pavle, who had him duly delivered to SimeonI. Either way, Zaharija ended up in Preslav.