Unless the castle was merely a garrison or a stronghold, there were living quarters in the castle, which were intended to be warm and cosy. They were Uc Santa Cruz Banana slugs shirt built the same way as townhouses. Needless to say, they were not very defensible, though. I’ve never seen or heard of any evidence of this actually happening. Technically possible, yes, but very difficult to walk in a flight suit with brass cojones that large.