Almost overnight, I seem to have developed a fixation (to put it mildly) on John Denver and this video/song in particular, so here's my burning question...

In the video link below, is he playing power chords between the lines of the chorus, when he's moving quickly up and down the neck? I looked at the tabs and I think it's just a G chord (unless the chord charts and tabs I found are simplifying it), but what JD is doing sounds much much more interesting and I wanna know what it is!

Most notably at the 2:30 mark, or a few seconds thereafter (the turnaround and into the first part of the bridge)

https://www.youtube.com/watch?v=kgU_emE5_so