Can you double dip Wound damage with double hits?

I was playing a run recently with the skull and got the Ares attack boon. It was great with the omega attack, shredded everything.

Then I got that hammer that lets you launch all the skulls at once. It was the strongest pick, but I lamented because I figured my attack boon would be useless on 3/4 of them.

But oh man, I don't know if that's true anymore, considering I just melted the whole surface to glass with it. Killed (Redacted) so fast he barely had enough time to switch phases before he had to switch again.

So I'm wondering: if more than one Wound strike hits at the same time, like even the same frame, does only one get the Wound buff, do they all?