This is a new / continued theme I’m still exploring: I see the knitting as a double knit fabric but sometime do double strand garter st or st.st.
If you want to try it yourself:
a double knit unit = 1 knit facing st + 1 purl facing st.
Change a unit like that to 1 double strand st or 2 st.sts (k on one side p on the next).
There is a lot that comes with it and I’m still learning (it’s fascinating), and I hope to write more about it. For now here are some photos:
and a scarf using that technique.
And this is how it started: