Originally Posted by
UpgradeMe
Yes. But there is no indication that the OP was trying to do that.
There's every indication that the OP was trying to do just that, and zero indication s/he was trying to do otherwise. Explicitly said "Attempting to book flights on AA in Y using AMEX rewards points" and looking for the seats/availability "on AMEX.com."
Question was about AMEX not showing the availability or seat assignment capability that AA was showing, <redacted>