How to apply the parvo/amplo akamptisomeric stereodescriptors to this bicyclic system?

I'm looking for examples of [*akamptisomerism*](https://en.wikipedia.org/wiki/Akamptisomer)[1].
I'm try to find simple molecules able to (theoretically) show this kind of isomerism.
I thought about the isomers of [(2*R*)-2-methyl-9-oxabicyclo[3.3.1]nonane](https://embed.molview.org/v1/?mode=balls&smiles=[C@]([H])12CC[C@]([H])(C)[C@]([H])(O1)CCC2).
Considering only the $\ce{(HC)O(CH)}$ group, I found the eight akamptisomers.


![RpRa](https://i.stack.imgur.com/wD9dC.png "(1Rp,5Ra)")![RaRp](https://i.stack.imgur.com/WNewd.png "(1Ra,5Rp)")
$\hspace{5em} \ce{(1$R$\_p,2$S$,5$R$\_a)} \hspace{7em} \ce{(1$R$\_a,2$S$,5$R$\_p)}$


![RpSp](https://i.stack.imgur.com/dSPWj.png "(1Rp,5Sp)")![RaSa](https://i.stack.imgur.com/3Bhqc.png "(1Ra,5Sa)")
$\hspace{5em} \ce{(1$R$\_p,2$S$,5$S$\_p)} \hspace{7em} \ce{(1$R$\_a,2$S$,5$S$\_a)}$


![SpRp](https://i.stack.imgur.com/9EpZf.png "(1Sp,5Rp)")![SaRa](https://i.stack.imgur.com/qBlr9.png "(1Sa,5Ra)")
$\hspace{5em} \ce{(1$S$\_p,2$S$,5$R$\_p)} \hspace{7em} \ce{(1$S$\_a,2$S$,5$R$\_a)}$


![SpSa](https://i.stack.imgur.com/u0Cbg.png "(1Sp,5Sa)")![SaSp](https://i.stack.imgur.com/AVWtT.png "(1Sa,5Sp)")
$\hspace{5em} \ce{(1$S$\_p,2$S$,5$S$\_a)} \hspace{7em} \ce{(1$S$\_a,2$S$,5$S$\_p)}$


Could the **(3*S*)-3-methyl-11,12-dioxabicyclo[4.4.2]dodecane** show akamptisomerism too?
What descriptor to use? Is this also akamptisomerism or will be another (new?) kind of isomerism?


![Isomer 1](https://i.stack.imgur.com/JJ3WP.png "Isomer #1")![Isomer 2](https://i.stack.imgur.com/IotqI.png "Isomer #2")
$\hspace{5em} \ce{(1$R$\_?,3$S$,6$R$\_?)} \hspace{7em} \ce{(1$R$\_?,3$S$,6$R$\_?)}$


[![Example 01 rotating](https://i.stack.imgur.com/SA8am.gif)](https://i.stack.imgur.com/SA8am.gif)
$$\ce{(1$R$\_?,3$S$,6$R$\_?)}$$


**Reference**


1. [Canfield, P. J.; Blake, I. M.; Cai, Z.-L.; Luck, I. J.; Krausz, E.; Kobayashi, R.; Reimers, J. R.; Crossley, M. J., A new fundamental type of conformational isomerism. *Nature Chemistry* **2018**, *10*, 615–624.](https://dx.doi.org/10.1038/s41557-018-0043-6)


