I've said before: it depends on how you define "event". Are pole vault and javelin the same event? Even if shot at the same competition? So, are recurve and compound the same event?
My position on the matter, is that if you are not competing for the same medals, you're not in the same event. Even if you're shooting at the same
meeting. The rules need clarification; as they stand they are open to interpretation. If
GNAS really mean to say you can't double bow, they should say so (and come up with justification for why not... I'd like to see that bit of sophistry

).