I'm from IL , and I have both my either sex permits, which also came with a bonus antlerless on both so I have 4 permits with me, along with TWO fall turkey archery permits. I'm betting he was legal,
Personally I do not think it is very nice to IMPLY He was hunting illegally.
Now as far as the "Lesson" goes, I'm guessing the lesson learned is suppose to be if you shoot an animal, don't shoot another unless you have tried to find the other one first?
I don't think there is a lesson to be learned here at all. If you have the tags, shoot all you want. If the first deer was wounded and not able to be recovered then he wouldn't have got one at all that day, if it was recoverable then we get this awesome outcome!!
GREAT job!!!