Complex sentence: Connolly made his feature film directorial debut with "Flick" in 2000 in conjunctiion with Fiona Bergin, and based upon Connolly's own experiences in Dublin.
Split into simpler sentences: Connolly made his feature film directorial debut with "Flick" in 2000 in conjunction with Fiona Bergin. The plot is based upon Connolly's own experiences in Dublin.