Capcom's string of recent Resident Evil remakes don't just overhaul gameplay; they also reimagine key story elements, tying the series together more cohesively. For example, in RE3 Remake, it's revealed that Nemesis was created using the Las Plagas virus from RE4, directly bridging the gap between games. RE4 Remake furthers that connection, with Luis now being part of the team who created Nemesis.
Because of these narrative tweaks, the two games feel less disjointed, flowing into each other more naturally. But it also creates a few contradictions, like Leon Kennedy fighting U-3 in the original, but not in the remake. Yet, somehow, both versions of each game are canon according to reputable leaker and insider Dusk Golem, who claimed that while fans tend to headcanon the originals and remakes as being in separate timelines, "Capcom doesn't view it that way at all."
Capcom's hand at RE canon is sometimes loosey-goosey. Key events, character deaths, dates, BOWs, etc, are all canon and kept pretty consistent. But specifics are kept blurry and up to fan interpretation.
That means that Jill Valentine both visits RPD and doesn't; Nemesis attacks Jill in her apartment first, but also at the...