Chacon was indeed robbed in their 2nd fight, but Limon was then robbed in their 3rd fight on an awful decision. I've never seen footage of their 1st fight, but I remember a commentator from 1 of Chacon's other fights mentioning that he took a beating in that 1. So it appears the final tally between those 2 rivals should've been 2-2.
Given the punishment those two dished out upon another it’s almost criminal of me to wish for it, but I’d have loved to see them have a best-of-seven series (for a huge pile of money, of course, as it would be well-earned). I know nothing of their first meeting save the result. I’m looking forwarded to taking in the second edition that has been so kindly supplied here — I swear I’ve looked for it before (years ago) but I’m delighted to get the chance to see it. I love watching these two go at it.