These are essentially the same thing with a twist: you hit a rhythmic high knees, but you then kick your leg out and bring it to the ground, scraping the toes back.
Here is Matthew executing the drill to perfection in slow motion (one must love the hat):
My video below isn't perfect, but it has the basic gist. My legs are not getting high enough (especially when bouncing off of my right leg which has a slight injury) and I was a bit timid to scrape the ground in my bare feet, but you need to with a bit of force. Once the slow motion kicks in you can get a better shot. Between the two shots you should be able to have the dynamics down.
Incorporate a couple 10-20 meter sets in before and after your runs, then think about it during the run, see if some of the cues you are learning can come into play. Helps with sprinting, forefoot landing, whole foot landing, as well transition from knee drive to landig.