Hi Apps
If there are no external leaks, the only place it can possibly go is into the transmission.
Is the transmission level high or higher than it was??
Being the transfer case is lower than the transmission, the only possibilty I can think of is the lube pump flow in the transfer case is getting directed past the seal to the transmission tail shaft housing.
not too likely but possible.
other option - someone is trying to play with your mind.
JD