My guess is the intelligence community is eavesdropping on Trump’s calls and they needed an imaginary “second hand” source to leak the information they heard. Citing hearsay from “White House sources” that don’t actually exist. And, they needed the update to the whistleblower form to pull this off. All very sloppy work from Intelligence because it will be exposed...but when you are desperate like the Deep State mistakes will be made. They are flailing, at this point, with the ongoing investigations into their corruption.
Trump should take visiting world leaders to AIRFORCE ONE to talk in person, if he can. No spying there.