Complex sentence: The first-leg matches were played on 25 September, 9 and 12--13 October 2013; the second-leg matches were played on 13 and 30 October, and 16--17 November 2013.
Split into simpler sentences: The first-leg matches were played on 25 September, 9 and 12--13 October 2013. The second-leg matches were played on 13 and 30 October, and 16--17 November 2013.