Suppose that frame O' moves at speed v = 0.6c relative to frame O. A rod with two balls is attached to its ends is 10 meters long in its rest frame, O'. Length contraction will tell you that in frame O, the rod is 8 meters long. But aren't the two balls at the ends "events"? They are clearly located at some location and some time. In which case relativity of simultaneity would tell you that in frame O, you don't see both balls at the same time! Instead this would imply the bizarre scenario that O doesn't see the the entire rod at some instance, but rather sees it slowly materialize. I feel like I'm missing something here..