You'll have plenty of time. Although I love SCL
for the efficient, transparent, modern and clean it is, it's not a large airport.
Just remember, since you will be "in transit", after leaving the jetway you (and all the passengers) will walk a corredor. Be aware that at some point of that corredor (almost at the end), there are some advertising that says "pasajeros en transito", at right hand. If you ignore it, you will end up at the official immigration.
This corredor is at the second level of the airport (although you don't know it). If you get to see some stairs that go down, you missed it! Most of the time, LAN has some girl announcing that this is the place for transit, and they are specially oriented to Argentine passengers (you will see maaaaany).
At this "en transito" room, you'll be controlled and take another stair up to the third lever, and there you have all the gates, duty free and you can even get a massage.
The basic structure of SCL
is this: 1st level: arrivals, 2nd level: jetways and airline offices, 3rd level: departures. Trust me, it's much easier than I make it sound
But this is not your first time at SCL
[Edited 2004-08-24 07:54:48]
in order: 721,146,732,763,722,343,733,320,772,319,752,321,88,83,744,332,100,738, 333, 318, 77W, 78, 773, 380, 73G, 788, 789, 346