Complex sentence: However, following conflicts with the city of Ghent over the quality of his work, Pieter in 1664 rejoined his brother in Amsterdam where, together, they cast some of their finest carillons, including that of the Dom Tower of Utrecht.
Split into simpler sentences: However, following conflicts with the city over the quality of his work, in 1664 Pieter rejoined his brother in Amsterdam. Together, they cast some of their finest carillons, including that of the Dom Tower of Utrecht.