Complex sentence: At the same moment, Unit-01 pulls Unit-00's core out of the Angel's which explodes, and its remains, along with Unit-00's core, are absorbed into Unit-01, fusing them all into one being.
Split into simpler sentences: At the same moment, Unit-01 pulls Unit-00's core out of the Angel's. The Angel explodes, and its remains, along with Unit-00's core, are absorbed into Unit-01, fusing them all into one being.