Perhaps looking at the minor chord scale (each of the three scales in triads) you can better talk about chords and minor scales.
I think the minor system is imperfect largely because of the V7 chord and you need to adjust the scales and corresponging chords to fit the chord progession (song) you are playing.
You can do that by using the 3 scales but certainly one scale may not work- there needs to flexibility.
Certainly 3 minor scales "harmonized" is how I teach the scales. Then you need to make exceptions depending on the song you are palying,