Ah, sorry, I was thinking of the Quiet Darkness (LOSH 21-24, late 1991. There is an ad for Star Trek VI on the inside cover of issue 24.) not the Darkness Saga.
I thought that the Quiet Darkness was Darkseid committing suicide ("Death by Legion".), or I was told this, I only own three of the issues, I had to move my bed to get them out of my book shelf since google was being a punk ass bitch, and I'm pretty sure I haven't read them, and the final issue has a dream about Darkseid, so maybe he's still alive, and I may be thinking entirely about a different Legion vs. Darksied cross over....
The advertising, of which little I recall, made the Quiet Darkness out to be a dirge of sorts.
"Immortality is too long, even for God."