That vine thickness is insane. Totally different than the thin green vines of the hardy hybrids I’m growing.
although not impossible. But 99.9999% of us will never have to consider hexaploid passiflora.
And those 0.0001% that do, have a laboratory, colchicine and experience with chromosome doubling. And than your likely considering other things to (and are already aware of ploidy etc).
For virtually all of us, we only have to worry about it being diploid (which most are) or if it’s a tetraploid or offspring of tetraploid (which a few are)
lets not make it more complicated than necessary 