I don't think finding individual notes / the inherent notes within a chord is likely that difficult. The problem with this sort of thing is the nuance that's really involved - a player with a decent ear will be able to tell if the same A note is played on an open string, on the lower, fatter strings, or further up the neck. With chords, you also need to start considering voice leading (where you're specifically picking chord inversions for melody, which on guitar will affect how / where you play a chord) and how the mechanics fit together overall (I probably don't want to play an open C chord followed by something on the 11th fret, for example).