Yes, but through the breather on the back of the engine, through the reed valve and up to the oil tank. That is one heck of a path for anything. Once that engine was punctured there's no pressure in the crankcase and nothing would go up the breather.
I'll let you watch the video and won't spoil the surprise at the end. More pictures to come.
The head is out being rebuilt now. I know how busy Jim is so I decided to stay local. All the guy's in the club use this shop, he's been rebuilding Norton heads since he was doing work for Kenny Dreer. Maybe before then. More on that later too.