Yeah Citi prestige uses aspire lifestyle...and I suspect Citi Ultima too...although they may all have dedicated teams for easy bank's cc
It seems more like you call your dedicated Ultima RM ( not to be confused with your private banker, this is a credit card RM) then if needed they forward and handled the request to Aspire.
I have seen the same person reply both an separate ultima and prestige enquiry.
On a sidenote, i prefered ten lifestyle a bit more.
Although the deals like the 1 for 1 chicago tickets seem to come alot more after the switch to aspire.