Complex sentence: They were reconditioned by the innovative LVT Allentown shops and were then operated from Allentown to Philadelphia as Liberty Bell Limiteds, and they served the hilly Pennsylvania as well as they had served the flat Ohio.
Split into simpler sentences: They were reconditioned by the innovative LVT Allentown shops and then operated from Allentown to Philadelphia as Liberty Bell Limiteds. They served hilly Pennsylvania as well as they had served flat Ohio.