SPOILER ALERT: This story contains spoilers for Season 2, Episode 6 of “Severance,” now streaming on Apple TV+. In the world of “Severance,” the line between one’s two selves — good and evil, innie and outie — can be imperceptibly thin. For Helly R. (Britt Lower), it was one insensitive joke about Burt (Christopher Walken) […]