Originally Posted by
B747-437B
No. Under no circumstance can you exceed 90 consecutive days in the Schengen area, regardless of any variance of opinion as to how a 180 day period is calculated.
Well, at least Belgian immigration services seem to think different. 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.