I haven't watched the video yet, but are they talking about superimposing pentatonic scales over chords other than their root?
That was something I picked up from John Scofield (who probably picked it up from Michael Brecker) and it totally revitalized my appreciation for pentatonics. Previously whenever I would hear (or play), for example, A minor pentatonic over an A tonal center, I couldn't escape the feeling that I was hearing something remedial ...because it all reminded me of what I sounded like when I was 14 years old and taking boring, simplistic guitar solos. The sound of an X pentatonic scale over an X chord is uninteresting to me because it just sounds like sucking, no matter how facile the player is.
But change one of ^^^those Xs to Y or Z, and suddenly the world's your oyster.