Originally Posted by
mixmastermark
Among other things, this allows AS passengers in T2, without having to reclear security, to access:
-AMEX Centurion Lounge in T3
-United flights in T3
-International G's Star Alliance gates
-Friends, family, coworkers in T3/T2 restaurants and lounges before or after flights
And allows UA passengers easier access to the AS Lounge in T2.