Board Thread:The Panopticon/@comment-9435571-20151118033620/@comment-24686060-20151201203347

In Players the flashback that features 2, he meets with Carstairs and Jennifer. Also in the Five Doctors, when 2 encounter's illusions of Jamie and Zoe, he is able to break the illusion by saying Jamie and Zoe's memories we're erased by the Time Lords. So Season 6b definitely takes place after the War Games.