MMM-
I believe TAM's only partner is American Airlines.
Burkey: TAM's flights out of Miami to GRU are:
Flight/ Time
Departing Miami
JJ3921 11:05 22:33 00 STQQSSD
JJ0891 20:00 06:59 00 STQQSSD
JJ3907 22:55 10:18 00 STQQSSD
JJ3999 23:40 10:56 00 STQQSSD
Flight/Time Departing Sao Paulo
JJ3998 00:20 05:51 00 STQQSSD
JJ3920 12:00 17:32 00 STQQSSD
JJ0890 23:58 05:00 00 STQQSSD
Not sure which one has the new Airbus or which are AA's code-share.