Okay, so I’m not the only one who is confused about how they could be related.
They are not related.
As George Soros confesses, he helped make sure few of his own relatives survived him and his Nazi mentors. He has a brother, Paul, who escaped the betrayal range of George. Paul Soros’ children are known, and not related to Mezvinskys in any way.
Bill, Hill, and Chelsea, by contrast, are known to be close to Soros and his daughter Andrea.