In the alternate timeline where Black Rose caused the 8th and final Calamity was Zodiark fully rejoined at this point or was that a process that would still take time?

Were the people killed during the Calamity the sacrifice needed to bring back the ancients Emet was talking about or would there still have been additional killings of people left on the Source?

Does this alternate timeline still exist in some sense? (I know we're getting into multi verse theory with this one)