I just read an article about recently observed jets emitted from a black hole, apparently due to the extreme acceleration of something falling into it. Now I'm wondering what would happen if the object accelerating into the black hole was another black hole. Yes, black holes are expected to devour any energy that crosses their event horizon, but as a whole would one not behave similarly to a non-black hole, possibly generating similar jet emissions? If so, would this be a mechanism for black hole gravitation and inertia to be converted into free radiation emissions? Or could such a black hole simultaneously generate radiation from acceleration and absorb it completely?