Complex sentence: He came to better understand the cultural differences between the stage and television, remains close friends with his fellow "Star Trek" actors and became their advocate with the producers when necessary, and his favourite technical line became "space-time continuum".
Split into simpler sentences: He came to better understand the cultural differences between the stage and television, remains close friends with his fellow "Star Trek" actors and became their advocate with the producers when necessary. His favourite technical line became "space-time continuum".