AF flies the old version of the 777-300 to/from SCL, meaning no direct aisle, 2/3/2 layout *and* no lie-flat seat.
Unless they announce some last moment shift in their rotation when you’re scheduled, that’s most likely what you’ll experience.
Small tip to find out layout with AF : do a dummy booking on the app, you’ll be offer to select your seat. You can see config from there.
2/3/2 —> No lie-flat
2/2/2 or 1/2/1 —> Lie -flat
From Dec. 4 though, AF will increase its frequency from 7 to 10 weekly. Additional flight will be 1/2/1 787 plane, which mean they will deploy new J cabin at that time (to offer same service to all flights to this destination). AF app when dummy booking seems to reflect that