That, of course, is the difference. Despite the way Len would grouse, they do smooth Viennese on this show. If you watch what is being danced competitively these days, smooth couples tend to not spend all that much time in closed hold. My own open Viennese has lots of shadow and alternative hold, but literally no closed hold at all. (My other three dances have a fair bit of it though, for the record.)
Val's vwaltz choreography always seems very silver-ish to me. Which I consider a compliment.