Ok, here I go replying to myself again....but...
Ok, I decided time to take the new arrivals for a warm bath (watering time in the tub). And...though it's only been 4 days since they arrived and the bulldog bud was quite tightly in the leaf axil, it's now 2-3 inches elevated.
Being used to orchids that typically are quite slow growing, this is semi-astonishing to me (but pleasing).