I hadn't heard about the Cassini datalink.
... scientists initially received only about half as much data as they’d hoped,...Cassini managers at NASA’s Jet Propulsion Laboratory were given an incorrect instruction set by the European Space Agency team,...“...we made a stupid mistake. I take full responsibility,” said Jacques Louet, head of science projects at the European Space Agency.
Part of the data lost in the malfunction was subsequently retrieved by a network of radio telescopes here on Earth that had been able to pick up some of the transmission directly from Huygens, bypassing the Cassini relay.
See The Wire for full article.