It happened a few years ago, middletown won the championship and had already won ulster intermediate, so were competing at senior, so keady and cuchulianns had to play off for a place in the intermediate.
Although that year there were only 3 senior clubs in Armagh so you could be right, may need two playoff games, or else Keady qualify as runners up? not sure
Although that year there were only 3 senior clubs in Armagh so you could be right, may need two playoff games, or else Keady qualify as runners up? not sure