One of the tapes implied that Chico died on the chopper. Was there ever any further confirmation of this within the game's story? Was the body ever recovered, and were the human bone fragments found in Venom identified as belonging to Chico? If there's no elaboration beyond a passing comment from Kaz or Ocelot, who've gone behind Boss's back before, then it leaves room open for speculation.
Did we also get any explanation as to why Amanda sounded suspicious according to Kaz in Ground Zeroes?