FAA/NTSB: Bravo NTSB! Bravo FAA!

Several years ago, at The Airline Symposium, I asked Peggy Gilligan, FAA Associate Administrator for Aviation Safety, who was on one of our panels,  "Why do the FAA and NTSB hate one another?"

After the laughter in the room died down, Peggy said, quite correctly, that the premise of my question wasn't accurate.  She said something to the effect (and I'm not quoting her) that the FAA was the regulator and the NTSB was the investigator, with no regulatory authority and because the results of  NTSB aviation investigations typically resulted in recommendations to the FAA, with which the FAA doesn't always agree, there was a certain amount of tension between FAA and NTSB .  An excellent answer. By way of footnote, it didn't prevent me  from asking Peggy, the following year at the Symposium, whether the NTSB and FAA still hated one another?