Heated over blanket - inside duvet cover ?

[vxa2]

Another post re heated blankets - I have looked but can’t find the answer on another thread so apologies if already answered.

I am considering buying a heated over blanket. The blurb says they can be put over the bedding or in a duvet cover. My question is whether the blanket would be in the duvet cover in addition to the duvet or instead? It might just be me bring dim. If you have an over blanket how do you use it ? I am considering the Dreamland Kingsize over blanket. Thanks

www.hygienesuppliesdirect.com/blog/can-you-use-an-electric-blanket-under-your-duvet

I use my heated throw on my bed over or under my duvet, but I always have a sheet over me as well.

I used to put over blanket in quilt cover with quilt. Nice an weighted