AF just changed there schedule CDG/PPT, Passengers will fly to LAX on a 773, offload, pick up their bags, pick up their bags and proceed to the gate, then fly on a 340-300.
TN CDG/LAX, you will just offload, proceed to a transit area, and board again. not having to pick up your bags.
I suggest you sign up for AIR Tahiti Nui newsletter, as they have lst minute deals quite often.