Indeed, Warmtoast, and all familiar stuff I'm sure. Apart from the throw away line that the Polish decoders were in Paris, following the fall of their own country, not a hint that they were to remain in France following the fall of that country.
As I say, all new to me, and it rather overrides our own preoccupations with protecting Ultra, ie by reconnaissance flights "discovering" Wehrmacht supply convoys that had already been revealed by Enigma, or prohibiting those in the know from entering operational areas. All rather pointless if others in the know were currently helping the Gestapo with their enquiries while under duress!