Complex sentence: One scene depicts Tanya Beyer taking part in a simulated sex scene--a departure for Playboy as in all videos up to this point playmates had only been involved in activities which were seemingly unrelated to sexual activity.
Split into simpler sentences: One scene depicts Tanya Beyer taking part in a simulated sex scene--a departure for Playboy at the time. All videos up to this point showed only in activities which were seemingly unrelated to sexual activity.