Chaining two functions () -> Task and A->Task

Answer 1

If you are unable to use await, you can certainly use Unwrap, but it handles exceptions sub-optimally. The method I prefer is Then as described in this article. Composition becomes simple and elegant:

Task Combined()
{
  return getA().Then(getB);
}

For those interested in the details, I wrote a blog post a while ago about exactly this problem of composing asynchronous methods, and how monads provide an elegant solution.