Hi, Adam!

I've checked the article and made a search for the term dominant. The one entry that I've found was the one below.

I have no idea why it is relating C minor to A major, but C major and C minor do have the same dominant chord (G, in the case), as well as any key share the same dominant chord with it's parallel. There can't be no dominant chord that leads to different fundamental tones.

Unless I'm missing something there's this minor mistake on the article, so don't break your head upon this any further!

I see no relationship between Cm and Amaj either...Maybe in a parallel universe.

It seems to be just a mistake in the article. C minor is the relative minor of Eb Major not A. I think the author just mixed up C minor and major here (C major = A minor)

Thank you all for your replies 😊