Boss fight scheduling seems weird

Going to have to observe more/do more testing to figure out exactly what's going on, but this seems pretty strange and doesn't make any sense. (might take note of what happens after a server restart) It seems like, at least in some cases, if you fight a "naturally" spawned boss, and kill it, another natural fight starts very shortly after (often 5 mins or less), BUT if a natural fight does NOT start (no players join), then the next boss fight starts 1 hour later. Given that the bosses give a decent amount of money, I suspect bosses starting so frequently might not be intended to begin with (that, and it doesn't really make sense for bosses to start less frequently because a boss fight didn't start)