Where the combined fleet could flee after Trafalgar

If the French and Spanish fleet escaped Trafalgar, would it hide in Toulon and face another long blockade?

Toulon would require another passage through Gibraltar. Cadiz or an Atlantic run toward Rochefort, La Rochelle, or Bordeaux better fits the geography, although Villeneuve's orders pointed toward Naples and his threatened replacement complicated the choice.

Cape St Vincent and the Moonlight Battle can compete with Trafalgar in strategic decisiveness. If the combined fleet merely escaped, Nelson could join the British force already watching Toulon and make that refuge even harder to use. Reaching Toulon would also require the damaged fleet to pass Gibraltar. Cadiz remained possible, while Rochefort, La Rochelle, or Bordeaux offered routes into the Bay of Biscay. Villeneuve had orders to sail for Naples, but news that he was to be replaced may have given him a personal reason to move the fleet closer to Britain instead. The counterfactual therefore turns on route geography, formal orders, and command incentives rather than survival at the battle alone.