We’ll find the black boxes just as soon as NSA, or whoever, finishes constructing & planting them, and not a minute sooner.
The black boxes won’t tell us much, but we’ll end up knowing a lot more about deepwater salvage techniques.
Or better yet, if the state news agency, CNN, can tell us it slipped into a black hole, why can’t it simply slip back through, minus the people and the black boxes, of course?