DDG isn't an aggregator, and it doesn't use Bing any more than it uses Google, Wikipedia, StackOverflow or anything else.
https://duck.co/forum/thread/4350/did-you-know-that-duckduck...
https://duck.co/help/results/sources
The other sources are only for their "instant answers" that appear at the top.
https://www.quora.com/How-is-the-Bing-API-used-by-DuckDuckGo
I was just trying to point out that Apple is unlikely to buy a search engine that relies on another competitor's product.
DDG isn't an aggregator, and it doesn't use Bing any more than it uses Google, Wikipedia, StackOverflow or anything else.
https://duck.co/forum/thread/4350/did-you-know-that-duckduck...