BAnnon is likely simply convincing Mueller that the real Russian collusion was with Fusion GPS, Steele, Comey, McCabe,the DNC
and Hillary Clinton. After the DNC knew that Russia had hacked DNC computers, they would not allow the FBI to examine the DNC computers, they hid their collusion. Its time to follow the Uranium One facts, and the Clinton Foundation facts. Steele likely was a double agent with Russia and the FBI. He certainly acted the part.And the FBI fell for it lock, stick and barrel.That’s the collusion.Its a conspiracy of the first order worthy of a RICO investigation against the Swamp Mafia itself.
Bannon just may set Mueller on the right “Russia Collusion” track, where there is indeed real hard evidence. Or he may be setting up a very serious revenge exercise aimed at the Kushners.
There's an interesting report that analysed the activity of the Russian troll social media accounts that have been publicly identified.
It turns out that most of their activity involved promoting (commenting, retweeting, etc) stories that appeared in the main stream media. One of the top media organizations the troll accounts referenced was Breitbart News.
My guess is Mueller is grilling Bannon over his time at Breitbart, whether Breitbart had contacts with these troll accounts, and whether any of that bled over into the Trump campaign when he joined in Aug. 2016.