I always get credit for both when we are able to get both HOWEVER I complete the SSI during the day using my birthday and info. My husband completes the SSI2 after clearing cookies and using his birthday and info. We do ths because I figure there are only so many SSI surveys and if I am taking through both links it will cut down on the number days I can get them before they run out of surveys for me. I wonder though if it also helps us to get both credits. I have never tried using my info for both so I don't know why you wouldn't be getting credit for both each day.