Complex sentence: He was the main star of the show as well as the owner of the production company "Dominicana de Espectaculos", and is also a former NWA World Heavwyweight Champion, although his title reign is not officially recognized by the NWA.
Split into simpler sentences: He was the main star of the show as well as the owner of the production company "Dominicana de Espectaculos". He is also a former NWA World Heavwyweight Champion, although his title reign is not officially recognized by the NWA.