Do Democrats need to have the Mueller "verdict" before they can start an impeachment inquiry?

[StarfishSaver]

19. There is no certainty that impeachment hearings will lead to Democrats getting grand jury testimony

Impeachment hearings don't automatically entitle anyone to obtaining such materials. That's totally up to a judge. And a judge has just as much ability to release grand jury information to Democrats as part of an oversight process preliminary to impeachment as to an impeachment hearing.

Also, a judge's discretionary release of grand jury materials is not the only way to obtain this information. Any witness in the grand jury is free to discuss their testimony and can be compelled to testify before any congressional hearing, be it an impeachment hearing or oversight hearing.

And, you and others keep saying that "impeachment hearings carry more clout" but neither you nor any of the experts you're relying on have offered any proof that that is actually the case. It's just an assumption.

Whether or not to expedite a matter is completely up to the individual judge, who will move as quickly or as slowly as they choose. And given how quickly Judge Mehta and Judge Ramos handed down their decisions last week outside of the impeachment process, no one can rationally argue that impeachment hearings are necessary to expedite decisions.