In Beyonder, when a character levels up, they can spend some Essence to increase one of their Barriers. They gain a Barrier Ability every time they do this. There are also paired-Energy Barriers, which a character gains by increasing two different Barriers.
Does a character get an additional Barrier Ability for overcoming a paired-Energy Barrier, in addition to the one they get for increasing a single Barrier?
The Rulebook is rather coy on this topic. This is all it says (p. 98, emphasis mine):
[...] In addition, whenever you overcome a Barrier you can choose a Barrier ability.
When you increase your Barrier, find the list of abilities below for the relevant Energy type (Body if you’ve just overcome a Body Barrier, for instance). You can choose any ability equal to or lower than your new Barrier.
Note that there are also Barrier abilities for paired Energies—Inner, Outer, and Ethereal. For instance, if you have Barriers in both Mental and Emotion you can choose Inner Barrier abilities. This is done in the same way as choosing abilities for a single Energy, but the lower of the two Barriers is used to determine number, maximum level, etc.