Kat Jarman and River King suggest we should fuse these two worlds into one Viking world because that's how the Vikings would have treated it. In most of human history up until modern times it was much more common to have a BYOG system of warfare rather than be you know something like the Byzantines or the Romans or the Chinese.
This show picks up where Dan's Thor's Angels show left off. In the early Middle Ages Pagan Germanic-language speakers like the Vikings are a dying breed. Many of their contemporaries wish they'd die faster.