is there a hose that goes from 4wheel drive to the transmission on an automatic

What is your question?

my 4x4 ford explorer it has a 6 cylender moter the transmission was working great and then i lost most of the tranny fluid going down the road there is a line it is a solid line coming from the transmission but i cant see any line coming from the 4x4 to that line, i need to know if a line comes from the 4x4 unit even a rubber hose line to the main line coming from the transmission, What seems to make the problem better or worse? nothing yet as i just got more tranny fluid for it How long have you had this problem? two weeks