I thought I saw him in Haunting Of Deck Twelve.
Although Neelix is probably my least favorite main he did take a good storytelling role. He was there to take some of the weight off over serious scenes.
Also, with Flotter. At least that seemed like a real children's holodeck program. Did you see Cost Of Living? I would have rather they spend the screen time in other ways, but if they had to do Naomi episodes, they could have done far worse. TNG is proof.
Didn't Chell also appear in Haunting Of Deck 12?