Cav was definitely faster than Kittel there, but Cav was still in Gronewegen's slipstream while Kittel was eating wind. Then again, Cav put in an effort to get onto Blythe/Gronewegen's wheel in the first place
It wasn't him, it was Van Rensberg. I'm sure Cav was there towards the end with Kittel in his wheel (aero helmet is another give away) but both seemed to get blocked in somehow. Need the overhead to know what really happened there, looked messy all the way in with QS coming through very late and DDD going early. I think they saw QS weren't there with 3km to go, decided to chance it and got swallowed up.