Hi Cameron
There is a response visibility setting Show responses when the section is submitted and closed
This setting determines when users whose relationship allows them to view others' responses will have access to those responses. Responses are never visible to others before they've been submitted.
In this case the responses will not be available in a section until the participant has submitted and closed the section - this doesn't require a previous section to be completed before moving on to next section but any responses aren't visible to others
Regards