JWs like to make a big deal about parousia meaning 'presence' rather than 'coming', but this is largely a distraction from the fact that the Bible only actually refers to Jesus' parousia as something that occurs after the great tribulation ended rather than a separate 'presence' before the 'tribulation' and then a separate 'coming' later on.
In reality, Jesus parousia has absolutely nothing to do with 1914. The 'great tribulation' was the Roman response to the Jewish revolt in 66 CE culminating in the Roman destruction of Jerusalem in 70 CE. Jesus' parousia was expected to occur shortly after that, within a generation of Jesus' death. It didn't happen, and people have been making up superstitious secondary 'fulfilments' ever since.
See also What does the Bible really teach... about Jesus’ presence?