Some Deuterocohnia have perennial bloom stalks, and will bloom two or three years on the same inflorescence.

They can bloom for seven years on the same stalk

Yes, there are a few exceptions to the one bloom per rosette rule, but most beginners aren't growing these plants.

This thread was a follow-up to this one. Not sure why a new thread was started, but in general, when an old inflorescence turns brown, cut it off. That plant won't bloom again (unless it's a Dyckia or a Deuterocohnia).