Relayed spotting and limiting terrain

[cjsiam]

So---
Russians are in a field....German officer is 3 hexes away---they are visible.....
German's have Mortars 10 hex away.....
The Mortars can fire Indirect/Bombardment---but DO NOT get the +1 column for being able
to see the units---because they are >3 hexes away.

Conversely---as soon as the russians open up---they get a spotted marker,
and they become visible to the Mortars (without needing the officer at all) and the Mortars get
+1 for firing in LOS.

Right??
The units in limiting terrain: 
Spotting them in limiting terrain by the German Officer at 3 hexes, does NOT translate into visibility (spotting) for the Mortars at 10 hex distance. 
They become visible if they fire.