[Latitude 28]

Along the lines of this thread involving the antifreeze/coolant recovery tank.  I am attaching a picture of my coolant tank with the AH completely cooled down.  The AH is low on coolant i.e. my finger can't reach the coolant level through the radiator cap.  What I noticed was the overflow tank level never changing from hot to cold. 

My question, does the overflow tank have a pickup tube inside where I have put the red line on my picture.  Mine does not have a pickup tube so I don't see how the level would get back to the AH once cooled.....am I missing something......figuratively and literally??