Know this is a little late, but we were able to achieve this:
In Google Sheets, choose File > Publish to the Web. Under Link and next to Entire Sheet, choose XLSX in the drop down menu. Under Published Content & Settings, be sure to check mark "Automatically republish when changes are made." Copy that share link.
We used wget in the command prompt to download that link and place the xlsx file locally. In Datalinq, pointed to the correct file and boom, we were able to update the Google Sheet and it updated after a few seconds in XPression. Unfortunately I don't have the wget command anymore, as this was a one time deal, but I do know there's a lot of tutorials on Google!
Hope this helps!
#XPression