However one doubt...why no Spoilers/SB after the touchdown/landing roll
Please no expert but I have seen many an aerodynamic breaking rollouts esp. on classic 747's. I feel they did not want to loose the drag of aerodynamic braking (not ideal in a normal landing) or rather risky in a normal landing. If they dumped the spoilers I feel the nose would have hit the ground with less control and at a higher airspeed. Lovely landing!