>>1536706>>1536712>>1536714Schofields and Tallawong will connect eventually, the corridor has been reserved. When that will happen though is anyone's guess. Maybe when the line from St Mary's to the new Airport in Badgerys Creek is built?
What upsets me most about Sydney's network is how much of Bradfield's foresight has been neglected. When designing the City Circle he accommodated for future lines and stations to be built around it, so there are numerous tunnels and platforms that were never used, including at North Sydney, Wynyard, St James, Central, and Redfern. They're all pretty much useless now.