I noticed Cavendish is like 174 or something in GC. Must have had a hellacious ITT.
Cav's not there to win the yellow jersey, so finishing the TT 20th or 170th is irrelevant.
His race is all about today's result and the green jersey. But as Chris Boardman said, last night, teams are not going to work to bring the peleton together for the end of the flat stages, just so Cav can go on to win.
So tactically today and the 6 other possible sprint finish days, could be interesting.