'For blood elf players, Auric joins Lor'themar and Rommath in congratulating the sin'dorei hero who had restored the blade. He states that now is the time to rally behind the bearer of Quel'Delar
and avenge the destruction of their lands, referencing the quel'dorei and sin'dorei collectively as the "children of Silvermoon'.
AKA Let's kill the Lich King together for vengeance.
Also:
'For non-blood elf members of the Horde and members of the Alliance, Auric is present when Lor'themar attempts to claim Quel'Delar for "its rightful owners." When the blade does not accept the regent lord and hurls him back across the plateau,
Rommath holds Auric responsible for this apparent treachery and the Sunwell guardians surround him with weapons drawn. Auric defuses the situation after inferring that Quel'Delar decides upon its owner, and not the other way around,
citing Lor'themar's foolishness as the reason behind his injuries. Rommath grudgingly calls his guards off, though warns Auric to watch his tongue in this holy place.'
Also don't forget what the -current- situation is:
https://wow.gamepedia.com/Auric%27s_Angels
I'm sick to see the exact same bullshit about the Quel'delar quest spread like that, you are not the only one saying that it means a reunification. If it meant reunification we would have seen it come to something tangible, that wasn't, even back then, it was a 'working together' situation exactly like Horde and Alliance (Literally a Horde and Alliance 'working together') but instead of 'For Azeroth' this is 'For Quel'thalas'.