Flying on a paid AC international J ticket.

Flying UA/Express Metal from TVC to ORD then UA flight number AC metal to YYZ the AC flight/AC metal to TLV.

AC says as J-international you get 3 bags @ 70lbs each.

Will UA check-in at TVC honor this?

I am assuming they will interline all the way through but I don't want to get hit with bag fees.

Thanks!