What actually is the Overground, and why?

Check out Train Sim World 4, to REALLY experience the Overground: https://bit.ly/TrainSimWorld4--JagoHazzard #AD Important questions: What’s the Overground? How does it differ from a regular railway? And why? Ko-Fi: https://ko-fi.com/jagohazzard Patreon: https://patreon.com/jagohazzard Just Watching Trains (2nd channel): https://youtube.com/@JustWatchingTrains-ji4ps Threads: https://www.threads.net/@jagohazzard Instagram: https://instagram.com/jagohazzard?igshid=OGQ5ZDc2ODk2ZA==