grape vine in willow

hi there folks!
I recently watch a short video by Javan Bernakevitch in wich he talks about one of the features of Sepps new property in Austria, and he comment on passing about how Sepps puts grape vines on willow stakes. I didn't get if he grafp it, or if he just plant the two together and they grow one into the other, or may be the vine grows over the willow. Can any of you clarify this? I wonder if it is even possible to grasp such a different families together... Any way, I am about to plant a large quantity of willows in my so I got very interested in this... my land is very marshy and willows loves it but I doubt a grape vine will find it so confy...
here is the video I'm talking about

OMG!!! that was awesome. And by the way... Sepp is 71!!! Seriously he looks better than people in their 50s. Screw the fountain of youth give me the garden of youth any day.

I need someone with a better english understanding than me to clarify if the willows and the grape vine are planted together or grafted or if the willow is planted as a stake and the vine is planted from seed. I can't really figure it out. Also, does anybody here have any experience in this sort of companionship planting?

He was not saying to graft the grapes onto the willows
but to plant them together,and give the grapes something to grow on.

Yes, but the new willow cuttings did not have grape vines planted at the same time. I think you would have to wait a year or so, till the willow could support the grape vine. Also, grapes are almost always grown from cuttings, not seed.

ok, thank you guys, much clearer