Complex sentence: At the time of her "Playboy" photo session, Cynthia was working as a Bunny at the Playboy Club in Lake Geneva, Wisconsin during which time she appeared in the "Bunnies of 1970" pictorial in the August 1970 issue.
Split into simpler sentences: At the time of her "Playboy" photo session, Cynthia was working as a Bunny at the Playboy Club in Lake Geneva, Wisconsin. Inddeed, Cynthia appeared in the "Bunnies of 1970" pictorial in the August 1970 issue.