Originally Posted by groundops

One would have to fly over 165,000 miles (OK only 7,700 in Y) on DT in J to get Umbi Umbi Gold on my outlined itinerary above (imagine that with 106 DT check ins)! If you tried to obtain Umbi Umbi Gold status on DT in Y, I think you would be looking at well in excess of 400,000 miles flown. One could of course achieve DT Gold status a bit quicker by flying F (probably only around 90,000 miles needed if all in F).

If you had to do domestic flying in Angola, you would need even more miles flown as the fares are cheap. But in my experience of flying DT, Y is often full or nearly full and J and F have one or two passengers at most. I would imagine there are fewer than 100 Umbi Umbi Golds and may be not many more than you can count on your fingers!