It sounds like just another name for the "regular" Orvis knot.
https://www.netknots.com/fishing_knots/orvis-tippet-knot
"Feed the tag end of the leader and the entire tippet through the loop created in step 2 two times."
https://bluequillangler.com/learn-fly-fishing/knots/orvis-tippet-knot/
"Do it again, so there are two turns of the right ends through the loop."