How will cross progression work for game progress and items?

@Asmodeus566In fact, I may have misspoken. I have 2 distinct progression: one on PC and the other on xbox but it’s 2 prgression are related to the same EA/origin account (the account you create when you launch the game (image attached )), so same email address ect...  I see that the two progressions are linked because I cannot add them or join them in the same lobby. My question: what happens to my 2 progression (pc,xbox) that are on the same ea/origin account when the cross progression takes place .  because I imagine that the cross-progression will link my EA/ORIGIN account ([edit: email address removed]) on all platforms to finally have a progression that will be unique and not multiple as it is currently. I hope this is clearer (I use a translation application and some sentences can be incorrectly translated)