Flight connection time at Sao Paulo airport?

standard IATA transfer time is 1hr 30mins, as you have over this you should be fine, i personally would leave my self more than 2 hours, just to factor in delays and stuff, neither airline are famed for their on-time performance. it may also be worth considering how you have purchased your ticker, if you have bought it as 1 thru-ticket (rio-lima) then you are covered if either 1 is delayed (i.e. they have to rebook you) if you have pruchased it is rio-lima and then lima-SP and anything goes wrong in the middle, you are on your own.