I found this on the BOS website:
"
Responses that exceed stated parameters
In some examinations, particularly projects and performances, there are limits placed on students’ work. This limit may be a limit on the size, time or word length of the work. Where a student’s response exceeds the stated parameters, a mark penalty may be imposed.
In written examinations, some questions indicate a limit on the length of the response. Overly long responses generally are not penalised because the student is considered to have already imposed a limit on the time available to answer other questions."
The markers are going to read every word of your essays, and mark it normally. It does say "generally", so maybe a penalty will be applied, but in my opinion, i think it's highly unlikely. Worst case scenario would be a penalty, but I am almost positive they have to read every last word. Like what if you did two responses but integrated them throughout. They can't skip a few sentences here, a few sentences here.
That is just my reasoning and opinion though