No, the 1" space is between the wood and the foam board. The foam glues directly to the concrete wall. It's in the article I left, towards the bottom. I would slip some 6"sticky window tape behind the studs - vertically, center stuck to the stud and ends stuck to the foam board cut to fit in stud bays. So you seal gaps between foam boards on the other side of board.
Be safe, Gary
If any ads are present below my answer or words underlined/colored, I do not condone/support/use the product or services listed/linked to, they are there without my consent.
WELCOME to the forums, if I forgot to say it!