HAL 9000 is a tough A.I. and he gave the heroes a lot of trouble, but I don’t think that he will be able to take Cortana down. She is far more advanced and she’d dealt with threats that would make HAL 9000 cringe. Cortana can forcibly take control of tech and use it to keep HAL 9000 down for good. HAL 9000 may have lost the battle, but not the war! Cortana wins.