And Hall has already been a captain so there is 4 first overalls who have been captains since Crosby was drafted. 2 of those have represented the Oilers but then Oilers have had 4 first overalls since Crosby was drafted and you can only have 1 captain at a time.
Being a 1st overall means that you is also very likely to be the captain on your team.
Agreed, but for some reason Hall wasn't captain in Edmonton