Steamer

Top, You keep referring to "the second call" coming in to the console.
It sounds like the attendant is busy on the "first call" on a loop key.
The second call will be in the Attendant Queue until the first call is released.
From the NTP - "AAA only handles calls presented to the console, not calls in the attendant queue."
If you let it buzz on the loop key until ATIM expires it should go to the AAA DN then.
Sorry to hear you don't have pkg 56 but it sounds like that's what you'll need.