Trying to get data from a excel file hosted an an external sharepoint

Hi,

I guess my issue is similar to the one in this topic, but not sure... In essence, one of our supplier to hosting an excel file on their sharepoint site (www.insightportal.suppliername.com/sites/....).

I do have access to this sharepoint and to the file using my company email and a password that the supplier has provided me (different from my O365 one), however I cannot manage to access the file through Get Data / Sharepoint folder.

I've tried to solve this using similar cases I've seen, but ultimately the main question is: is it possible?

Thx for the clarification,

Ben