I have a TAM to TAM international-to-international transfer at GRU on Christmas Eve with just 1 hour 50 between flights (in from LHR out to SCL). In J class on an I-fare/mileage award ticket.

Any reason I might not make it ?

UK passport needs no transit visa but would welcome update on security/queues/delays/ways to avoid delays from someone who's transited GRU more recently than the last forum posts.

thanks