@IntermittentParps
jam, I know, but I'm pretty sure that's right... I suppose they're all used to quick changes.
It doesn't need to be a quick change ~ they need to do a quick change mid-show, but after the show they've loads of time between the votes being counted, and everything set up for the dance off, etc., In that time they can film the judges' debrief, film the musical guest (if it's not a pre-record), so basically they've got as long as they like to get ready.
This week Maisie will need to get into her CC stuff (not much of a change needed, really. Just a bit of hair tweaking and sticking a pair of jeans on) if she chooses to do that as her higher scorer (though her VW was far, far better, IMO), Harvey's highest score was his second dance anyway, Jamie scored the same for both dances so could choose either one (though if I was him I'd go for the salsa), and Bill & Ranvir would both need to change. But that's all easily doable for a backstage team that are used to getting people ready quickly.