Bruce knows someone who knows someone? A friends of Babs' told an acquaintance of Richard's? That means the person in the middle's either Lady Shiva or Vic, and I'm putting my money on Vic. That way there's a closer connection along the way between my two favorite characters. Sure, it's still indirect, but it's better than "one of her field agents dated him once (and then no one ever mentioned it again :( )" or "a woman she used as an agent once is his successor" or "they were both featured in separate stories in Batman Chronicles #15".