Burning damage stacks and sources (quick question)

Ok, I've looked through the forums but couldn't find an answer specific to my question:

Do different instances of burning damage stack when resulting from different skills?
(i.e.: Fireball and Flameblast, since both have chance to ignite)

I know the wiki speaks about different sources of burning damage being able to stack (Fire Traps, Righteous Fire, Searing Bond), but I'm not sure as for the reach of the 'source' word, does it mean different skills of a character, different characters, or different physical sources in the gameplay screen?

I'm really confused :P

Thanks in advance for any clarification!

I think Ignite counts as one source for this purpose, no matter which skill or attack made the crit. So only the highest-damage would apply.

No idea whether I'm pulling this thought out of my head or the other end though.

Ignite (fire critting, or any "chance to ignite" sources) does not stack. Only the highest damage/second will be in effect.

Other sources of burn (ground fire from Fire Trap, laser beam from Searing Bond) do stack, and they also stack with Ignite.

Got it, thank you very much guys.