Not that long, you would see it play out similar to what happened in TNG episode The Wounded or DS9 episode Defiant. Picard is pretty cagey but it seems pretty unlikely they could deal with the Federation and Romulans coordinating and putting significant resources into their capture or destruction for very long, at least assuming they don’t just leave. At that point, they would find it difficult to keep their ship outfitted and supplied when they are outlaws.
Not that long, you would see it play out similar to what happened in TNG episode The Wounded or DS9 episode Defiant. Picard is pretty cagey but it seems pretty unlikely they could deal with the Federation and Romulans coordinating and putting significant resources into their capture or destruction for very long, at least assuming they don’t just leave. At that point, they would find it difficult to keep their ship outfitted and supplied when they are outlaws.