As there are two plants in the pot, at least they're doing the minimum required: one bloom each every year.
It has been like that since I got it, 4 years ago.
Does that mean two, separate clusters of plants, or was it two fans on one plant to start?
If it is a single colony sharing resources via rhizomes, definitely keep it as one. If it is two, smaller colonies sharing a pot, you're better off separating them, if for no other reason that they are "backups" for each other in case of a health issue.