AmeliCA vs Plan S: Same target, two different strategies to achieve Open Access

At the same time when  COAlition S was launched in Europe, AmeliCA was brewing the extension of REDALYC’s philosophy, knowledge and technology to the Global South. AmeliCA is a multi-institutional community-driven initiative supported by UNESCO, which seeks a collaborative, sustainable, protected and non-commercial solution for Open Knowledge in Latin America and the Global South. Both initiatives have a common goal: to make Open Access a reality. However, Plan S and AmeliCA imply two very different visions and two conceptualizations on the circulation of scientific knowledge. What is the main difference between them? How is it possible that some of their proposed strategies are counterposed?