There is a cross over of a few questions, Gordon has done a spreadsheet with the details, under the guides tab.
Both departments are different, there is talk of joining them but with the recent election who knows what will happen. The different departments maybe able to access the records but the criteria for both sets of questions are different so it should not have a bearing on the outcome.
I know many claimants who pass one but fail the other.
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems