If fox was investigating Formy for whatever reason, they wouldn't be on the same team. What's the point of that when you can talk to your team mate.

Fox and formy are not on the same chaos team.

So whatever fox found out, but doesn't want to share, is what is interesting. Fox has not pushed for formy to be lynched. Whatever fox found out, isn't incriminating on formy.

If Fox is Cosmos, pushing for a town is bad after you know they're good, that's obvious.

If Fox is Chaos, pushing for a town after having your investigation somewhat public, is extremely bad for you. If we lynch formy, formy is town, fox is in a very very bad light.