On a biblical level, for a woman to become a zavah, does she need to have the onset of a new flow come during the 11 'zava days' (the 11 days past the 7 'nidda days'), or will even a flow that continues from her nidda days make her zavah?
For example, let's say a tohar woman has a flow which makes her niddah, she counts 5 days but is unable to make a hefsek, and then continues to see blood intermittently during the next seven days, and then also for three further days beyond that. Is she now a zava, or still a nidda (since her nidda flow never stopped)?