In SE4 EP4, Nemesis, Janeway asks Neelix what he knows about the war on the planet Chakotay is marooned on. Neelix knows about it.
However, in Season 3, Neelix is forced to go to lengths to get a map because he doesn’t know what is beyond the Nekrit Expanse, as he hadn’t gone beyond it. Now they have been thrown beyond Borg space thanks to Kes.
So HOW can Neelix possibly know ANYTHING about this planet? He can’t have talked to the ambassador because Tuvok was the one who had communicated to him.