I understand that normal horde are (kind of) time based and they end when either a timeout passes or you kill 20 enemies... Endless hordes are area based and they end only when leaving the horde area.

Now, when exploring new areas, is there a way to differenciate the two other than dying? A visual or auditive cue? Because normal horde you usually want to fight as it's the quickest way to end it. Endless horde you want to flight (unless strong enough to farm it)...

I'm asking this question because whenever I hear that dreadful gong (congrats by the way, the gong really makes me feel dread, but not always in a good way). I can never know what kind of horde it is... so my usual habit is fight it out (also because that's how you get most of the experience I believe). And so when I die, I can almost never be sure if I should've fled instead...

(also endless hordes puts glass cannon builds at a major disadvantage).