From my understanding, unless otherwise agreed upon, the lower sector always goes up to his limit and the higher one has everything above, starting immediately above, but not including the top of the lower sector's ceiling. Essentially, the low guy is given an upper limit and the high is above, rather than the high having a low limit and the low going up to, but not including that limit. Of course there are exceptions.
So in your case, the high would have FL335.
The way this seems to work, is that the strata values are defined based on aircraft separation, rather than being perfectly specific. It's a funky way, but it seems to work....until you throw a wrench in the works, but having to chunks of the sky have the same level
