OK, in solar mass terms, 29+36=62 with 3 left over. Or make that 3 left out. This is a little-advertised mechanism for pulling mass from a black hole. And, since the output is gravity waves, it doesn't seem to be directly related to Hawking Radiation. Somehow intense gravity can scoop out mass from a black hole - and the proportional amount of information that goes with it. But do those gravity waves really hold that much information? They seem to vary only by math functions based entirely on the mass and dynamics of the black hole. Can they encode more than that? It seems more likely to me that these black holes must have been shedding something more than GWs. What could that be? If I timed it right, could I cross the event horizon of one black hole just before the effects of another one pulled me back out and ejected me? I don't think so - but it certainly adds a new twist to that well-discussed journey.