Okay. I'll explain. Halo is based off humanity in the late 26th century. Star wars is in the late 3000 BC ( proof is in lost arc Indiana Jones R2 D2 and C3PO are hieroglyphs.) It would take Star wars 5.6 thousand years to ascend to the same year as Halo. Therefore their tech gets that many years to evolve. Star wars does not get effected by realitivity ( they warp drive and nothing happens) so therefore travel to halo galaxy would not change years.