I assume a more common scenario is something like expanding the property line. Person A technically owns the plot, but neighbor B thought it was on their side o

I assume a more common scenario is something like expanding the property line. Person A technically owns the plot, but neighbor B thought it was on their side of property, and has been letting their animals graze on it for the past decades. Until eventually a surveyor appears to correct the record and that is when the land-user can claim possession.