Thanks Katy for reposting this
I've been doing this with my Denise's for a few days now. I put one of each size on each cable. So I mismatched the ends. But the sizes are very close, 7 and 8 and it's just for some rustic dolls I am currently addicted to. Works fine for this. But we still need the answer for those times that gauge would be much more important like socks etc.