I encountered this at my door with some JWs who insist Judas wasn't present for the Last Supper. John implies and Luke outright states that Judas was present when the bread and wine were blessed and passed. However, the JW version is that Judas left beforehand. They give their timeline and jump around in the Gospels to get the scriptures they want in the order they want them in. They similarly jump around in Mat 24 to get the order of events they want. JWs don't even bat an eyelash the blatant lies, because they're relying on the Watchtower to dumb it down for their defective, idiotic brains to slowly digest.
This point is one of the main things that really bothered my husband. It really highlighted for him how the WTBTS was not honest about what the bible actually says.