I have Origin and EA Access. Confused

Hi,

Pretty sure this isn't covered in the FAQ. My issue is I have Xbox Ultimate and I already have PC EA origin account for PC games separately. The EA origin account uses a different email and password to my Xbox Live, but my Xbox Gamertag is associated with this same account, it shows in the 'linked accounts' section of the website.

So, since my setup is a little confusing. How will this work? If I cancel my Origin will EA Desktop take over??