But the social connection between Epstein and Musk may be more complicated than that, Business Insider has learned. Jeffrey Epstein was in regular contact with Elon's brother Kimbal Musk ...

Kimbal Musk, the brother of Tesla and SpaceX billionaire ... made small talk with Kim Kardashian and Lauren Sánchez, the girlfriend of Jeff Bezos, the third-richest man on the planet.

Musk and his brother, Kimbal, have often described their immigrant journey in romantic terms, as a time of personal austerity, undeterred ambition and a willingness to flout conventions.