How have we never gotten a Frank Ocean + The Weeknd collab?

I was thinking the other day how it's pretty interesting that the two of the biggest and most forward thinking R&B artists of this century never collabed in any capacity.

I know Frank has been virtually retired for years, but Blonde released in 2016 - when Abel was already well beyond mainstream with Starboy. And they definitely have a big crossover in fanbases.

I also get that they have different styles, but there's still some sonic similarities between them throughout their careers. For instance, I could imagine The Morning being on Channel Orange, and Pyramids fitting perfectly in Kiss Land. I don't think they're far off enough to not be able to compliment each other in a song. Especially since both Abel and Frank have already done plenty of features - so it can't be that either.

Just a random thought.