Catalonia may declare independence

The transcript discusses the escalating tensions in Catalonia, where pro-independence students at the University of Barcelona blocked access to lecture halls, leading to confrontations. The Catalan police prepared for potential government ousting, while the region's leader, Carlos Puigdemont, considered declaring independence. The Spanish government, led by Prime Minister Rajoy, stood firm against the separatists, with the Spanish Senate considering Article 155 to impose direct control over Catalonia. The situation is tense, with both sides preparing for significant political actions.

What could the Catalan leader declare in Parliament, and what was the context of this declaration?

What actions are expected from the Spanish Senate regarding Article 155 of the Constitution?