No, if you're reading this by mistake and haven't seen the film, I strongly advise you not to continue, 'cause the following is beyond spoiler.
I'm the type of guy who normally watches movies with the subtitles on as English isn't my first language.
One of the things I'm planning to do is to watch QoS again tomorrow, but in the mean time perhaps you guys can help me with the following plot clarifications.
No problem
1. What was Felix and the other agent in the plane doing talking to Greene? Are they undercover?
They're not undercover, they "collaborate" with Greene, closing their eyes on the coup he's plotting in Bolivia, as long as they can secure the oil resources of the country for the US. Hence the comment about sleeping with the bad guys by Leiter after Greene's gone.
2. Why was Felix 'demoted' and then 'promoted' again at the end of the movie?
He didn't appreciate the methods of his superior, Beam (the moustache). He refused to ID Bond when Greene showed his picture on his mobile phone, feigning not to recognize him, then helped Bond in the bar instead of having him arrested. When Beam was revealed to have had bad intuitions about Greene and his plans, he was sacked, and Leiter got the job as head of South America department.
3. What was Gemma's role in the movie? Just to call Bond in? Was she sent by M to do anything else? There was a scene where she was walking up to Greene ... to..?No, she's a simple clerk at the embassy, not a proper field agent. She was sent to put Bond back in a flight to London as soon as possible. She got trapped in a game bigger than she thought... About her walking up to Greene, I think you're talking about the party? In fact, she just comes with Bond, for no particular reason other than keeping him company. At some point, when Camille finds herself in a bad position, Bond comes up to Greene, and Gemma helps to by "unintentionally" dealing with Elvis.
4. During the concert when members of Quantum were talking to each other via their ear-sets, what were they talking or planning for?
They're talking about the coup plot planned by Greene in Bolivia. He tells he needs 2000 km of pipeline, they agree, and then they talk about transferring funds, and how the Americans will react, and Greene says they won't care about yet another dictator in South America, if they can get some profit from that. Or something like that.
Then Bond interrupts, saying: "If I may offer an opinion, you guys should think of a better place to meet", or something along those lines
5. How does the other members of Quantum contribute / help in the coup de tat of the Bolivian government?I think it's a matter of funding. Maybe there's something else, but I don't remember.
6. Is Mr White the head of the organization? If not, who is he?We do not know who's the head of Quantum.
7. Which agency was Vesper's boyfriend, the Algerian, part of?Quantum. He makes a profession of seducing women working on the fringe of the intelligence world, like Vesper, to have them trapped and secure their cooperation with Quantum. Once they're in love with him, he disappears, then Quantum pretends they have abducted him and threaten to kill him if the girl doesn't cooperate.
By the way, this guy is ugly, I wonder how he can be such a ladykiller!