Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.601 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
Another possibility, offered only certain months of the year, is LAX-DUS-TXL, all on AB. The LAX-DUS nonstop is seasonal, and offered just a few days per week.
I cannot comment on the comfort of AB Y on long-haul flights, however.