@iampowerslave I don't think that option exists for both Deco and your router. I bought the archer AX55 pro (it supports OneMesh but that doesn't support Deco mesh system). Long story short, decided to return that router and connect ISP's ONT cable directly to one of my Deco units as main router. Imo, your Deco X75 is powerful enough to cover the whole house so might as well think about removing your router if possible. If you want to keep your router (and broadcast wifi radio from this), be aware that transition between your Deco mesh & router will not as smooth cause your router is simply not on the same mesh.

Hi, thanks to everyone that answered.

I didn't knew beforehand when I bought this setup that the meshes were not compatible, that is not something easily found on searches, in fact the documents some of you pointed out were not results in many searches I've tried once I already had the setup

I thought the Deco were not as capable as the other AX, but then I did set up a Deco and only one has more reach and all the features I was searching for (like VPN Server) are available too. So I'm thinking of keeping the Decos instead.

The unfortunate side is that the Decos only work with a TP-Link login account and I don't feel confindent having a third party accesing my private configs.