Word on the market is that Duo is very sticky on the asking rent, whereas MOR is much more willing to negotiate.
My take is, Duo is not in a rush to fill up. The office space takes up level 4 to 23, and Andaz Hyatt takes up level 25 to 39. The lettable floor area for office space is nowhere as much as MOR. Currently Mastercard and Abott are there. Guess they are taking time to fish for tenants who are able and willing to pay.