From what I have picked up somewhere the PAs to the big players all have their own network so that they can get stuff done If Steve Jobs wants to get in touch

From what I have picked up somewhere the PAs to the big players all have their own network so that they can get stuff done If Steve Jobs wants to get in touch with Bezos (lets assume no prior contact) he would ask his PA to "get me a call with Bezos" - The PA then reaches out to Bezos' PA and they arrange the call between them