I don't believe there is any break where He then begins to speak of a future second coming. I would side with Gill on this, that it is all AD 70 (all of Matthew 24):
In Matthew's account of the Discourse, where do you see the break between the events concerning the destruction of Jerusalem and the events concerning the Second Coming?
But of that day and hour knoweth no man…
Which is to be understood, not of the second coming of Christ, the end of the world, and the last judgment; but of the coming of the son of man, to take vengeance on the Jews, and of their destruction; for the words manifestly regard the date of the several things going before, which only can be applied to that catastrophe, and dreadful desolation
“Lay on, you men of eloquence, spare no colors, you shall never depict him too bravely. Bring forth your harps, you seraphs;
sing aloud, you blood-washed ones; all your praises fall short of the glory which is due to Him.” - C.H. Spurgeon, on the riches and excellencies of Jesus Christ
Pastor, Free Grace Baptist Church
Chilliwack, BC, Canada