Originally Posted by elpiett
Every six months after your first entry, a new period starts. And there's nothing that forbids to link the end of the first period with the beginning of the second period, allowing you to stay well over 90 days.
But according to that Court ruling you cited, the 'second period' (as you call it) can't begin until / unless you leave the Schengen zone and come back in (even if only a day later).
cheers,
Henry