- FBC gives Veltro B.O.W.s for an attack on Terragrigia.
- This establishes FBC as a leading bioterrorist task force; Veltro is then disposed of
- Tricell wants the t-Abyss virus that was made on the ships, so they need a reason to inspect the ships for it
- Raymond is used to start this inspection; Landsdale then tries to cover up his scheme with the FBC and Veltro, so he bombs the Veltro base and tries to have Jessica cover his tracks with the ships
- The remnants of Veltro are disposed of, and evidence is gathered that shows Landsdale funded the terror attack
- Raymond gives the t-Abyss virus to Jessica, who gives it to Tricell
I can't really say the same for Rev 2
- Alex Wesker funds experiments on an island, using the precarity of the population as cattle
- Alex works on the t-Phobos virus which involves the minds of people
- Alex wishes to "carry on" her life either in relationship to this virus, or a separate consciousness copying plan, the game doesn't explain if these are the same or two different plans
- Neil abducts Natalia and members of Terra Save to be used as current experiments for her goal of carrying on, with Neil hoping to get a copy of the Uroboros virus to use as a reason to revive the FBC
- Natalia is seen as the perfect host because she's immune to fear, even if her bracelet is red; implying she's mutated due to fear as that's what makes it red, or perhaps the mutation in her is carrying Alex's consciousness, either way she's a "B.O.W." like Eveline in RE7 by being able to see infected, like herself
- Claire and Moira are infected with the t-Phobos virus; Moira's wristband turns red but she shows no signs of infection, unless she too is infected with Alex's "will," but no cure is ever introduced
- Claire eventually escapes the island, Moira survives with Evgeny for six months, Natalia escapes the containment chamber (I just realized I don't understand how she did this. Isn't she sent underground where the gas is, which gets turned off after she escapes and is out of the facility?), and Barry comes to the island, looking for Moira as well as exploring the island with Natalia
- Alex is killed, and her project on infecting Natalia's consciousness seems to have succeeded, as she grows an interest in the works of Kafka
In the case of Rev 1, not going into what Jill, Chris, and company do doesn't really break the flow of the narrative; you just play their parts as those bits unfold. But in the case of Rev 2, even if you consider what the playable characters do there, the central arc of the plot is still too muddled. The central goal of the virus can only be assumed to be part of Alex's goal of eternal life. Does it allow decaying cells to regenerate and mutate like the Uroboros experiments on the island? Did Alex survive killing herself because of t-Phobos for this reason? Was Alex expecting her ego, her "I-ness" to just move between bodies? She seemed to want to continue on as Alex in other bodies, but some of the pages you can read near the end of the game make it clear she thinks there's only one of her, and that she can't be copied without being someone else, though this is much more to do with the concept of the ego than a virus with a fixed self.
As a thought experiment, if you have a copy of yourself, is that also "you" as much as you are you? No, not really. Maybe her goal with the virus was that those with a will like hers, to not be afraid of fear and thus death -- the ultimate fear -- would also carry on her will and motives, but that raises questions on the whole consciousness copying thing. Was she trying to replace Natalia's memories with hers, so in a sense she's pursuing the same goals Alex wanted? Good candidates for the t-Phobos virus who don't get mutated by it might be what Alex wanted, as they would pass her "test." This would presumably leave us with Natalia and Moira, though Moira was not experimented on outside of being injected with t-Phobos, even if by the end of the game she's marked as mutated.
The game doesn't explain any of this well at all, even if it implies Barry is the one who would learn the truth right at the end. He, and thus us as players, don't learn shit. A great deal of what I said is speculation, because the game doesn't make any of this clear. The only question about Rev 1 to me is Landsdale: he bought the trio of cruise liners and essentially continued what Umbrella was doing. Shouldn't he be a Tricell agent, too? They even gave him funding for the project, unless Tricell's plan was to eliminate the BSAA, which meant the FBC had to go under. The BSAA go after Spencer directly after Revelations 1, too.
There's many, many, many more questions about Revelations 2 because a lot of it comes down to poor presentation and explanation. I found greater coherency in the plot of RE7 and how it linked to the larger series, and that's considering the huge hooks there don't come in until the last hour or so.