Subject area joins

Hello all, I am trying to create an analytic using two different subject areas. I found this;

USER GUIDE: How to join data from different subject areas using union — Cloud Customer Connect (oracle.com)

Which was very helpful and I got it to work but it seems to have an issue; the results come back with repeating lines - one line for each subject area instead of one line with the data from both subject areas. is there a way around this or a method to make them appear in one single row?

Thanks

Peter Downer