Here we have a fictional encounter: Oblomow watching a nearby raven. Fictional where I live, because here in northern Germany we don't have many ravens (yet, they're repopulating!).
But elsewhere, like in the USA or Canada, wolves and ravens have been frequently seen together, mostly at kill sites, where the ravens wait to get their part of the pack's prey.
Some studies suggest there might be a "bigger" relationship between the two species, like true mutualism, but the research is not yet finished, so we have to wait... and to imagine!