^ They're not necessarily in the same universe. In fact, we know at least one reason why they're not, and Munch is the reason: In one H:LOTS episode, Munch mentions The X-Files
as a fictional show. Yet, Munch also appeared ON that show. Therefore, there are multiple Munches - one in the L&O/H:LOTS universe, one in the XF one.
And if this is true, then this Tommy Westphall crap kind of falls down.