Summary
Yes indeed, the Saiyan Extinction did happen, and yes, indeed, Bardock did send his son Kakarot away from planet Vegeta before that was so; however, the pod of Kakarot did not land on Gohan's doorstep due to certain complications; instead, a few years earlier, a different ship did while Kakarot's pod landed elsewhere. What does this change mean? Read to find out.