Well sombedy is pedantic enough to argue if you must use a CA before you get the CP, so 🤷
By the way, I would'nt play with somebody that is pedantic enough to argue either of this things
It's not clear at all.
Nowhere says that CA ara abilities, unless you found some place where it clearly states that CA are abilities, CA can't be treated as such. In that case gaining a CP and Rally are simultaneos effects, and you can choose wich to resolve first.