here is what i would do. if it is just for a logo that i need to create just one time.
can you create the brush for the rope? don’t worry about the gradient just yet … just get the shape right and then expand the brush and the off set the paths with a really small negative value. then make the offset path a light yellow and the original path orange… then do a blend shape between the two.. i don’t have time to test this but you might need to regroup the paths.
also here is a link to some free illustrator brushes that should help you trouble shoot your problem in case having the gradient as part of the brush is critical.
https://www.tripwiremagazine.com/2012/05/illustrator-brush-sets.html