Charlie I will take a stab at this but I am limited. I don't have the asperata but do have and bloom the pandurata. The pandurata blooms from the beginnings of the pbulb formation. After the bloom is finished, the growth continues and then that becomes the pbulb.
It is also recommended if you divide a pandurata to keep five pbulbs. I had five when I purchased it, grew a couple of new ones but no blooms from those. The next pbulbs produced blooms for me. I think it was on the 8th and 9th growths I got blooms.
All of this info may be totally wrong if the asperata over rules the genetics of the pandurata. If this newest growth doesn't bloom, I would definitely repot it to keep the pbulb from being squeezed into the side of the pot. I've found the pandurata is not the least bit picky about root disturbance.
The picture is from two years ago and that is a 16" basket - panduratas are not small plants :>)
It now lives in a 20" basket.
Brooke