Accounting Sheets for a Restaurant Business. In 2016 an Excel File was used. In 2017 a Google Sheet was used. Now we want to compare the monthly and YTD revenues for both years. Will Excel Sheets and Google Sheets blend? Excel sheet is accessed via an Excel Reader node; Google sheet via a REST Google API. The Google Sheet can be public (no authorization required) or private (OAuth2 authorization required). This workflow demonstrates an example of an access to a private document.