Confused by corruption delay wording

There’s a note for corruption that says:

Whenever it is ready. Only delay if you can AoE 3+ targets before Combustion would be ready again.

I’m confused by the second bit. It sounds like don’t use combustion if you anticipate there being 3+ enemies in the next two minutes?

If you use combustion right now on a single target, you then have to wait for two minutes to use it again.

If you know that in one minute there will be three targets to hit, you will do more damage by delaying combustion for a minute so you can use it on three targets.

That’s just an example, but it illustrates what the logic is doing.

Great, I think I was overthinking it. That makes sense, thank you!