It's not the opponent that the darkness in between blocked, it's everything within the darkness between the two pockets of light that is blocked from being seen. Regular darkness blocks seeing whatever is within the regular darkness. But since regular darkness doesn't block regular light (unlike the Darkness spell, which does)... you can easily see anything lit up beyond the darkness in whatever diameter of light is out there.Regular Darkness doesn't actually block anything in at least one example. You are in light, your opponent is in light and there is darkness between. In that case you will be able to shoot him as normal. Darkness magical or otherwise didn't block anything.