In the Season Two The Clone Wars episode Senate Spy, Rush Clovis, a senator representing the InterGalactic Banking Clan, is suspected of working with the Separatists, which later turns out to be true. From the episode prologue:
Treachery in the Senate! The Jedi Council suspects that Senator Rush Clovis is secretly taking part in a Separatist conspiracy. But to find out what the Senator from Scipio is up to, the Council will need a spy of its own.
Later, in the Season Seven episode A Distant Echo, Wat Tambor claims that the Republic "wouldn't dare" send a strike force to Skako Minor, due to the Techno Union's supposed "corporate neutrality".
The part I don't get is, how are either of these organizations able to get away with pretending to be neutral, and why are they bothering? In Attack of the Clones, Obi-Wan witnesses both of them full-throatedly joining the Separatists:
WAT TAMBOR: The Techno Union army is at your disposal, Count.
SAN HILL: The Banking Clan will sign your treaty.
DOOKU: Good, very good.
Obi-Wan presumably would have told the Jedi Council and Republic intelligence about this as soon as he could, so why is the Council (including Obi-Wan) merely "suspicious" of the Banking Clan, and why does the Techno Union claim to be neutral as well?
Note: It doesn't appear that this was ever supposed to be a secret in Legends—the ships taking off at the Battle of Geonosis are referred to by clone troopers as "Techno Union ships" in works such as Battlefront (2004), and the Banking Clan seems to have been openly supplying droid tanks and "Banking Clan frigates" from the beginning of the war as well. Much of the plot of the 2003 2D Clone Wars series also involves a Republic assault on Muunilinst, the Banking Clan homeworld. Did this change for TCW?