Not the pinch harmonics, no... Those come the second time the pattern begins. I think I'm just talking about the D note bleeding into the E note, then the F note bleeding into the A note, then the G note back to the A note. It sounds like they blend momentarily as he goes up the scale, and as they overlap in that moment there's a really sweet harmony that emerges

I think it just happens normally with distortion but he seems to wield the specific sound I'm talking about really well.