They were just not in the game at all. They weren't engaging to play a tennis match. Especially Federer proves again he doesn't give a crap about Davis Cup. That said, both looked absolutely uninterested.
Logic would not appear to be your forte
Signing up to play 3 back-to-back best of 5's when he could be home chilling and taking it easy to make the last push for the year, proves he doesn't give a crap about Davis Cup?? Run that by me again, Mr Selector