Originally Posted by JonNYC
If it's a stop, he can stay as long as he wants-- if it's a transit, the rule is 6 hours and you can't "wait for F" as it were.
i've phoned cxmpo and the cso told me on an oneworld award tix a transit is anything less than 24hrs and the is not technically waiting for f class as he just dept sin on the last flight and even based on the oneworld timetable it suggested this overnight option
however maybe aa is different in the rules