Still, the notes drag on, the notes have harmonics, etc. It is not pure sine waves that abruptly stop and give time for the ear to 'clear' of afterimage-like sound.

I hear the difference in the cadence, it's just that I totally can't believe it can possibly be clearer than just the one chord then another chord. I can tell apart just the two chords at much lower volume level and/or paying much less attention.