Complex sentence: With her help, the SPD base was protected from harm, and after the battle ended, a second time portal was opened and the unmorphed Nova Ranger, along with the unmorphed and now-fully-human Omega Ranger, returned to the future.
Split into simpler sentences: With her help, the SPD base was protected from harm. A second time portal was opened after the battle ended and the unmorphed Nova Ranger, along with the unmorphed and now-fully-human Omega Ranger, returned to the future.