Originally Posted by
ATOBTTR
Once DL started putting D1 flat beds in the 757s with the 2x2 layout, DL dropped the "100% direct aisle access across D1" marketing. They did advertise certain routes with all-aisle access - I specifically remember LHR getting such marketing at one point.
Of course, although instead of seeing routes specified, I've seen it advertised for all DL wide body aircraft.