Are there any samples of coroutines being used in kotlin-native to manage code running on background threads?

I am not aware of this, and moreover not even sure if it's a good way to reason about concurrent programming. Probably conjunction of coroutines and workers would do better.

are there any samples of this?

we could develop one, do you have any practically important usecase where you believe this symbiosis may be helpful?

Sorry, I didn't mean my original question. I was actually asking referencing something you said to me 10 days ago "Sure, the whole idea beyond workers is computations offload, if you want to share threads - coroutines are way to go."