That might be possible. A train on the same lines does run between Rajender Nagar Terminal and Islampur for a distance of 62 km(mostly unreserved passengers use it). IR may just be able to do it here as well. But just because it's possible doesn't mean it'll be done. IR doesn't have a concrete reason to do it yet but who knows, it might change in the future.
A more likely scenario could be where they develop Atari as an alternative terminal and route trains from there. Already Jabalpur - Atari SPL runs; in the future other trains may also run.