Silly idea here, but I’ve been pondering this.
Jerusalem Artichokes send up tall stalks. Groundnut (Apios Americana) is a nitrogen fixing vine.
Both are tubers that get dug up maybe once a year, at comparable times.
What do you think? Would coplanting them be likely to give me a free trellis and a bed full of goofy tubers, or would they both try to strangle each other out and leave me with a hopeless mess?