Complex sentence: Both Nick Costello and Jim Fox left the band prior to this release, to be replaced respectively by Gary LaLonde and Barry Connors, who later went on to work with Toronto-based quartet Coney Hatch.
Split into simpler sentences: Both Nick Costello and Jim Fox left the band prior to this release, to be replaced respectively by Gary LaLonde and Barry Connors. Mr. Connors later went on to work with Toronto-based quartet Coney Hatch.