Complex sentence: From 1986 to 1990, the champion of the Primera División earned a place directly, whilst a Liguilla Pre-Libertadores tournament was held every year to determine the second qualifying team.
Split into simpler sentences: From 1986 to 1990, the champion of the Primera División earned the eligibility directly. Moreover, a Liguilla Pre-Libertadores tournament was held every year to determine the second qualifying team.