What's this? More debate and argumentation that the Feds didn't wait excessively long before grounding the 737 Max 8? There is no way to prove such a thing. May as well play the lottery and hope not to win the jackpot, though some of the balls are weighted...
But the ADSB data was available right away, even while the plane was flying. It's available to everyone on sites like FlightRadar. Why does the FAA keep saying they had to wait to get it?