Update: I've now spoken to two different Citi reps (one called AA on my behalf) and both have said with certainty (one even specified 200% certainty) that the miles would be in my AA account by/on Tuesday. I guess we'll see...

Update #2: As expected, that 200% guarantee didn't come to fruition. I spoke to a supervisor yesterday with Citi who said he'll be keeping an eye on it and said he'd expect the miles there no later than Thursday. I decided to call AA today and see what's going on on their side and they put a request in with the partner miles department to contact Citi and get it straightened out (7-10 business days). All in all, a very frustrating and unprofessional experience.