Does 'The Hazmi brothers, sitting in 5E and 5F, joined Hanjour in the first-class cabin.' stand in direct opposition to the premise 'The Hazmi brothers, as well as Hanjour, sat in the first class cabin.'
The Hazmi brothers, sitting in 5E and 5F, joined Hanjour in the first-class cabin.###The Hazmi brothers, as well as Hanjour, sat in the first class cabin.