Mount Question.

[RUMBLETiGER]

That's.....terrifying....anyway, what did you say?

Exactly. Imagine that charging at you into combat!

In other news, Centaur Knight!

 

[jefgorbach]

RAW defaults to mounts with animal-level intelligence trained to "ready" their action to react to their rider's whim.

RAI implies Awakened mounts roll initiative/react like the other pc/npcs. It becomes akin to playing basketball atop your friend's shoulders - rider/mount both react per the normal rules, with practiced teamwork making the combination improve over time.