Rev. 11:19b requires Rev. 16:1 to be next!
The plagues that will end with an earthquake and great hail, for the trumpet plagues received their announcement as shown in Rev. 8:5 and then the seven sounded and at the end an earthquake hour came.
But the vials are to end with an earthquake and great hail, so move from the end of 11 to the start of chapter 16.