Mike McDonald is with the ravens.
D'Anton Lynn came from the ravens
Ucla's d got a lot better when D'Anton Lynn arrived.
Even after he left (and a ton of talent went to the nfl), the d stayed pretty good (not great, but better than 2017 and 2018).
I conclude that D'Anton Lynn introduced this "modular" approach to d to Ucla, and Malloe picked it up and is carrying it on.
Interesting that McDonald took a step down so he could have a lab to perfect his thinking and teaching.