I'on is going to notice that little glance and since his thoughts are already addressing the possible obstacle he might be to them (should they decide to no longer be allies of a sort) he's going to likely draw a few more conclusions (or educated guesses). It'll be something of confirmation for him.

This is surely going to be an...interesting relationship between these three, provided they remain associated. Also it's kind of interesting because it seems as if these three are almost their own party, rather than several people who are destined to join the main group at a later date :P