The way I read your question, I'd have to say no.. But,, I may not understand your question.. Most times, I don't understand much of anything these days..
There originally was a shaft between the oil pump drive gear and the distributor shaft.. [Some have been replaced with a single long shaft].. These have off-set slots and notches and the lower shaft should be able to be removed from the oil pump drive thru the distributor hole in the head.. The oil pump drive gear is attached to a shaft running from the camshaft to the oil pump.. This shaft and retainer housing is held in place with a retainer spring that is accessed through the valve chamber..
So from your post, we may not be sure of which shaft you're referring to..