Complex sentence: Continuing on the route it goes to St. Patrick station where you can transfer to trains on the University-Spadina Line and then goes by bay and reaches an other subway line called the Yonge line.
Split into simpler sentences: Continuing on the route it goes to St. Patrick station where you can transfer to trains on the University-Spadina Line. It then goes by Bay St. and reaches an other subway line called the Yonge line.