The Sixth Seal stands unique in causing an event on earth without an angel mediating God's wrath, and
it represents the angelic mediated events of the Seventh Seal, seven trumpets and seven bowls. By culminating
in the catastrophic earthquake, the Sixth Seal appears contemporaneously as the Seventh Bowl.
But the Sixth Seal doesn't mention the hundred pound hailstones.
By describing the release of the last plague of huge hailstones as part of the Seventh Bowl judgment, the
narrative resumes the continuous sequence of the apostle John's prophetic revelation.