To be honest I don't think that is how battle sense works, especially for someone that has experienced real combat, at the very least their body would naturally react to the battle even if their mind gets distracted, and secondly generally when someone has been through their fair share of fight they tend to become flexible and able to react to the unexpected because you can never predict what will happen in a fight. At the very least you should be prepared to fight in your underwear or in the nude just because clothing gets ripped and damaged through the course of a fight