I recently flew from DTW-NGO-MNL. The flight was delayed out of DTW because of a mechanical problem with the 747, and luckily there was a 747 parked one gate over that was substituted. We incurred an approximately 90 minute delay because of the need to transfer the baggage and cargo to the other plane. Arrival into MNL was about 75 minutes late... the pilots made up a little time and the layover in NGO was shortened. As a PM and BE customer, I was pleased that DL was able to have a substitute 747 for us to use on such short notice. The only problem was that the luggage was not unloaded following SP rules. My bags (2 luggage + one large box) came off at around 10 minutes after luggage started unloading for the first piece... the box. And then the other two pieces of luggage arrived about 25 minutes later, near the end of the process. The SP bags came off at random intervals. Given the delay, arrival to customs at MNL was around 2:15am instead of 12:10am as scheduled. In the past I could count on DL and previously NW to deliver the BE luggage right away. How much do you think it was the transfer to the 747 or just inattention to the SP labels that caused the luggage to not be delivered properly???