However, the other thing to consider specifically in the case of LATAM is that LATAM (to its own members, at the very least) doesn't support one-leg redemptions. (Officially, it doesn't support one-way redemptions, but one-way redemptions consisting of two legs seem to work, just not one-way-single-flight-leg redemptions.)
So, unfortunately, with LATAM you have to worry about whether you're searching for flights with "too few" flights or "too many" flight legs.