The questions raised by the region's failed bid for independence remain unanswered. And key figures remain in prison.
A strange coincidence of historical circumstances in Spain could, taken together, help to bring about a resolution to the crisis in Catalonia.
The former president of Catalonia is in a German prison, awaiting possible extradition to Spain where he faces charges of rebellion.
After the most recent elections, Catalonia's secessionist coalition is free to form a government. But their president is still exiled in Belgium.
The single biggest party was anti-independence but together, the pro-independence bloc is stronger.
Why the international law of self-determination does not support Catalonia's claim of an international right to independence from Spain.
After declaring independence, regional leaders stand accused of rebellion, sedition and embezzlement. But what does that mean?
The situation in Catalonia is ripe for widespread civil disobedience against the Spanish government.
Just because the constitution says secession is illegal, it doesn't mean it is under international law.
Move by the senate in Madrid came just after the Catalan parliament voted for independence.