Professionally immature? Seriously?
It would have taken a single email from the DPA to the AOA to say this is what we're negotiating and this is how it affects your members. And I'd guess most AOA members would have been ok with it for the greater good of the pilot body.
And you have to ditch that chip on your shoulder.
AFAIK yes KA was taken over, the CX parent company acquired a majority shareholding in KA, there was no share swap, no legal consideration of both companies into one entity. But the thing is no-one at CX cares, no really, we don't. Both airlines benefit from each other.
I didn't mention KA starting at the bottom of seniority. You did. It's ridiculous.
The DPA was desperate to get the staff travel through at all costs, that doesn't appear to me like your pilot body wants to avoid integration.