There are cases as well where maybe you want a linear async/await flow in the middle of an Observable flow, too.

For instance:

    let jsonStream = searchFieldChanges // observable of search field change
        .debounce(300 /* ms */) // don't do it too often
        .flatMapPromise(async (search) => {
            const request = await fetch(`${searchUrl}?query=${search}`)
            return await request.json()
        })

ETA: To reiterate the point: both tools are better together and it's not one or the other, it's like most tools finding the right one for the right job.