[ghusbands]

It's only semantically CPS in as much as all code is semantically CPS. Thinking about the parallels with CPS does nothing to help, here. Async/await is just like threaded code with the blocking/concurrent calls specially marked.

[int_19h]

Except it's not like threaded code, because there aren't necessarily multiple threads. And with a single thread event loop, you don't need locking and other synchronization mechanisms at all, further reinforcing the point.

Async/await is literally all about explicit continuations. It's not about concurrency or parallelism per se, although it can be used in that context.