Would believing the coming again of the Son of Man has already happened be considered heretical by the Catholic Church?

Some Christians hold that the Second Coming of Jesus is yet to come, and some hold it has already happened (certain kinds of preterism). Would holding that Jesus in the Olivet discourse (Matthew 24:30, "They will see the Son of Man coming on the clouds of heaven, with power and great glory.") was prophesying an event that has already happened (say, associated with the siege of Jerusalem and destruction of the Second Temple) be considered heretical by the Catholic Church?