Even if there is the apache license is compatible with the LO licenses. That means LO can simply take the code they like and plunk it into LO. This has always been the problem with the fork for the OO side, the code can go only one way and that's into LO, LO's improvements can't go back to Apache OO.
Either way I doubt there is much to worry about. I just don't see the momentum in OO. IBM is going to throw over the fence some code but they aren't committing to keep contributing.