Unfortunately not, one is a drop down and only present on Process A, I thought linking it to something in Process B would allow the field to populate on my table.  Is that possible?

If you just run a multi-process report, you could add Process A and Process B and put each field in the table. It will show them both, but each would be in it's own column. Linking the variables attempts to combine the variables into the same report column, but can only be done if they are similar field types. For example if one is a drop down and the other is a single line, since they are both text, that should work.