this kinda contradicts itself but this is what i could find
7g. reads, "When flags of two or more nations are displayed, they are to be flown from separate staffs of the same height. The flags should be of approximately equal size. International usage forbids the display of the flag of one nation above that of another nation in time of peace."
7c. starts, "No other flag or pennant should be placed above or, if on the same level, to the right of the flag of the United States of America..."