I'm not very familiar with Objective C and Swift, so this might not make sense. But JS used to have a similar problem with async/await. The v8 engine solved it

I'm not very familiar with Objective C and Swift, so this might not make sense. But JS used to have a similar problem with async/await. The v8 engine solved it by walking the chain of JS promises to recover the "logical stack" developers are interested in [1]. [1] https://v8.dev/blog/fast-async https://v8.dev/blog/fast-async