important context:
"An XLSX file is a spreadsheet file created by Microsoft Excel, which uses an XML-based format to store data in a zipped archive. Introduced with Office 2007, XLSX replaced the older binary XLS format and is used for data, formulas, and charts arranged in rows and columns. It is the default format for Excel workbooks and is widely supported by other spreadsheet programs like Google Sheets and LibreOffice"
Opening: I managed to get it open in google sheets and then exported to PDF for printing.