Pulling data from (Eloqua) Activities table via the Tableau connector

Hi,

I have a report in Tableau that pulls data from Eloqua via the connector. I have synced Eloqua contact data and two of the Activities tables (Activities - Unsubscribe and Activities - Bounceback) so I can exclude anyone from my contact segment who is either unsubscribed or a bounceback.

When I compare my Tableu report numbers with my Eloqua segment I can see the step that causes a discrepancy when I build my segment criteria like for like is where I try to exclude anyone who has unsubscribed or bounced back. Up until that point the numbers match up, so I know it's to do with the data being pulled from these Activities tables.