surface rights and mining rights are not necessarily mutually exclusive. Two parties can each own one or the other.... or both, and then there would be only one party. The last man standing wins. If each party owns a part of the action, a compromise will certaainly evolve since the stakes are pretty high.
There is no need for compromise in my opinion. From my understanding, as per a recent Chilean Supreme Court decision, Lopehdia is the only one on title to Mineral concessions for Mina Pascua Chile. When Barrick bought LAC in the 1990s the purchase included their SALT claims not Mineral claims to Mina Pascua.