Yep that's correct. The pickup points on the gear for the front rear are the 60ish 40ish split in the transfer case, but there is nothing to hold them to that. If your car squats then more load is applied to the rear part of the transfer case gear assy, so it frees up the front part to send more power to the front.
Google nv125 transfer case. Also look at the pictures to get a good understanding of it. It's basically an open diff that has more rear bias. I've researched it fully.
My transfer case is working fine and haven't heard it jump a tooth for a while lol. Doesn't mean it is perfect but the only solution to sending power to the back is to lock the transfer case.
This is only needed to launch the car from a dig. I mostly still get traction at any rolling speed.