Domestic Transfer in SCL
We are arriving from IPC on LAN to SCL at 1020pm and we have a flight leaving for CJC (Calama) at 6am on Sky. So its a domestic to domestic connection but on different airlines so I won't have the boarding passes for the Sky flight. My question is do I have to leave security and cross back in. Or is there a way to get to connecting flights while being able to collect my luggage without having to do the whole security dance. If so how do I get the boarding pass for the next flight?
Alternatively if I have to exit to the public area and Check-In does anybody know if the Sky has anybody there so I can check-in?
I have about 7 hours to kill and I would rather spend it at the Lounge but it is past security.