Questions about Justicar of Muir


My first question is about the Celestial Companion:

Does the falcon get the full levels of the paladin/justicar or does it start at level 1? 

I would assume full levels because otherwise that's gonna be monster meat or it's gonna have to hide constantly to avoid being monster meat, but it isn't super clear

And about the Sword of Courage - Can this power stack with Paladin's Bonded weapon ability?