Pangaea is used to describe the state where all the land on earth was one great big landmass and therefore there was just one ocean too which was everything that surrounded that land mass.

Therefore, before Pangaea or all the land was linked you are asking whether the land was previously split before it came together. That is possible – we do not know the answer. However, we read about it and current theory suggests that yes there have been break ups and come together forming super continents before, though this hardly seems set in stone.