[quote=@Etcetera]
<Snipped quote by Balance>

I'm sure there are some that don't know who some others are. That's inevitable.
[/quote]

At the least, the powerful ones should know each other. In FT there are a bunch of background characters that change all the time and we never ever mention, and then there are the ones with significant power who all know each other.
EDIT: But yes, David should know Spirit, so you should probably respond.