Hi Nicky,
How far off do you see the content as being published? The reason I ask if because Mobile First isn't far off and this is changing how Google indexes pages and works out the rankings.
Part of this is that they are going to start viewing the content behind a tab or accordion - the main reason for this is that Google is going to start using the mobile site for both mobile and desktop rankings and they see this as the best technique to keep mobile users happy. It is good for UX.
At the moment, Google will index that content, but it will be given a lower score than if it was all shown, but you also need to think about how a page might look without it - will it just be a huge page that you can get lost in, or is it not so big that you could have only 20 Q&A's and have it still looking good?
-Andy