I just looked back and it took me less time than I initially thought to flower Hoya vangviengiensis. I got the plant as a cutting in September of 2017, where it quickly rooted and grew well enough to have to up-pot it a few times over the first year or so. I was tremendously excited when it got its first peduncle, but this is one of those Hoyas that a peduncle means absolutely nothing. It probably got a couple of dozen over the years but never budded up.