Thanks so much for the help. I was able to find the YYZ-SCL flight for Tuesday, 2 Nov by selecting the +1 day option. I'm actually trying to track it to see if they release additional business class seats because as of now, I have an award seat in coach for 10 hours <shudder>.

If I'm trying to plan more complex routes, I'd need to upgrade to Diamond tier to use the ITA method?