Complex sentence: Most superheroes from the Golden Age later followed this trend of operating publicly, wearing distinctive costuming and interacting in a largely shared universe though the primary characters of Superman and Batman still largely worked independent of team environments.
Split into simpler sentences: Most superheroes from the Golden Age later followed this trend of operating publicly, while wearing distinctive costuming and interacting in a largely shared universe. However, the primary characters of Superman and Batman still largely worked independent of team environments.