The first of my three ripe pseudobulbs has emerged from its sheath. I am anxious to see if any of them branch like the last ones.
I would guess, if this behaves like mine, the newer branches will continue as high and as productive as the main inflorescence does. I still have one branch going, months after the main inflorescence was cut back to the node where the branches came off, on the last pseudobulb of mine to bloom. I was concerned that cutting the main part of it back might send then entire thing into yellowing, but it didn't affect it at all.
Will also keep you posted on the latest bulb, to test the theory that it is age that contributes to the branching.