Which of these food brand collaborations actually happened as an official partnership?

Brand collaborations in the food industry can create buzz, reach new audiences, and result in innovative product offerings. These strategic partnerships between food companies have given us some memorable and sometimes unexpected product mashups. Test your knowledge of these famous food brand collaborations and see if you can identify which partnership actually happened in the culinary marketplace!

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Oreo x Taco Bell: The Oreo Crunchwrap Supreme (cookies embedded in a taco shell with traditional fillings)
Cheetos x KFC: Cheetos Sandwich (featuring chicken filet coated in Cheetos dust with Cheetos sauce)
Coca-Cola x Kellogg's: Coke-Flavored Corn Flakes (breakfast cereal with cola flavor crystals)
Starbucks x Heinz: Coffee Ketchup (condiment infused with espresso undertones)