We're constantly told and reminded how they have a deep running relationship that borders on the esoteric but you could never tell from the way they interact. His relationship with Bond is a classic example of telling rather than showing. what.? And it never resolves itself and never gets better really, it's just too convoluted. It's one of those contrived schemes he has that from the moment you hear it, you instantly go uhh?. Seems like they wanted to do something 'modern' with the tech, hacking thing yet it dates the movie worse than anything lol.
Also i didn't care for Javier Bardem's character at all, he is a great actor, that's not it, just the character i felt was so lame. I completely lost interest by the time they retreated into that house and did some defensive hold or whatever, it seemed so silly.