Missed calls are the part of the game sometimes, whether or not we, coaches or fans like it. As time passes, this is taken more into account by most people.
Too much time had passed to revisit this scenario -- maybe if he came out and pressed you about it before the second half started. But he wasn't pushing so you shouldn't be offering (at least not at that point).
Like others have said, you could just be setting yourself up for comments in the second half ("You said you were going to be looking for that!" or worse.) Then it gets geometrically stickier.
Run into him at the grocery store after the game at some point, now there's a possibility for further discussion, if you both choose. (This obviously could depend on how the rest of the game went, if you feel further explanation was still merited, etc.)