Complex sentence: Few intercity services terminate or commence from the station, most of them do so with Connolly Station and these are services for the south (Rosslare Europort, Wexford).
Split into simpler sentences: Few intercity services terminate or commence from the station, with most serving Connolly Station. The station does act as terminus for some services for the south (Rosslare Europort, Wexford).