Question regarding ruleset - KNT chaos construction

[14_15_16]

its about this puzzle:
https://logic-masters.de/Raetselportal/R...?id=000I5G

• A cell with a red X in the bottom right corner indicates the size of the orthogonally connected section of the region that cell belongs to.
  
  
• All possible size clues (red Xs) are given
  

Do the Xs count ALL orthogally connected cells of the whole region or just the connected cells of this ONE
particular section of the region? 
example : a section has 2 orthos including the x, but the whole region has 7 orthos overall.
is the x now 2 or 7?

thanks for help