In The Dark Knight Rises, Bane
takes the Wayne Enterprises board hostage, and “forces” Lucius Fox and Miranda Tate to give him access to the nuclear thingy.
This hostage-taking is what prompts
the police to head into the sewers, where they are promptly trapped when Bane sets off his explosives and takes control of Gotham.
Some time later
a special forces team covertly enters the city, and are taken by Jim Gordon and John Blake to meet Lucius and Miranda, who are living in a building which is then raided by Bane & his soldiers, who re-capture Fox and Miranda.
But when did these characters get free from Bane in the first place? Did he just let them wander off at some point? Why?