Leo Foreign currency accounts are indeed not the same as using Wise. There is also a Wise integration inside the bunq app, but to use it you have to click on "Currency not listed? Use Wise!" (even when NOK is listed) in the currency selection.
Basically local currency accounts and the Wise integration are just two different things, completely separate, and they have different fee structures. Depending on what your goals are, you would need to decide which one is better for you to use.