Is it possible to create a hyperlink within an Excel cell which only uses a section of the cell text for the clickable link? I.E. would the below table mockup represent som
This isn't possible in Excel. Hyperlinks are associated with entire cells.
If you look at the documentation for the Excel hyperlink object, you can see that it's associated with a Range. If it were possible to associate hyperlinks with a span within the cell, the Hyperlink object would need to have an associated Range and Characters object.