But what they've debated is the exact voicing and instrumentation (which instrument played which part), NOT the notes of the chord. All this "debate" seems to just be Beatles fanboys looking for a lot more cleverness and complexity in Beatles music than really exists. As a huge fan of music and music theory, and no huge fan of the Beatles, I can assure you that countless abundantly more eluding, complex, and novel chords exist in other music.