Consider a world where they let the whistleblower complaint proceed, unimpeded, to Congress:
* Giuliani doesn't go on television acting a fool.
* Congress attempts to investigate, mainly behind closed doors, but all the Trump stooges close ranks.
* Weeks pass.
* The other calls stored on the secret server never get leaked
* Dems demand the release of the call. Trump makes the actually decent argument that calls with foreign leaders should not be released. The call never comes out.