I finally got my first cattleya to bloom. The flower sheath was hidden beneath an adjacent leaf for awhile. The flowers have a faint honeysuckle fragrance.
No. It's a western window, and they get a few hours of direct sunlight in the afternoon. The main difference was that I moved all 3 of my cattleyas to larger slotted pots with fresh Repotme mix last year, and they all seemed to be much happier afterwards.