3 Keiki's and only one spike?

[Dr. Dave 4u]

I'm wondering if anyone has any experience or can make an educated guess in regards to phal keikis going into spike?
The mother phal has the one big spike with 3 keikis and one of those keikis has gone into spike and the blooms opening now!
But, my question is since the other 2 keikis are exact clones, born at the same time and growing in same conditions why didn't they go into spike?
Has anyone ever had or seen this situation where both or all keikis had all gone into spike?
Does the whole orchid and keikis function as one big plant and thus just share the one spike?

Also, Dean of Orchid Insanity who sold me the Keiki paste suggested after these bloomS finish I might try for a third generation on this current spike! What do you think of that? Fun interesting idea or crazy?
Has anyone ever tried for a phal with three generations on the one plant?
Last question, might they grow like this in their natural habitat?

Thanks