How to go to the same custom page twice from two different custom pages in Inno Setup?

Question

You can skip pages based on condition. However, how can you go to the same user page from two different user pages?

UserPage1 := CreateCustomPage(
  UserPageA.ID,
  'Title 1',
  'Sub Title 1'
);            
UserPage1.OnNextButtonClick := @UserPage1NextButtonClick;

UserPage2 := CreateCustomPage(
  UserPageB.ID,
  'Title 2',
  'Sub Title 2'
);            
UserPage2.OnNextButtonClick := @UserPage2NextButtonClick;

UserPage3 := CreateCustomPage(
  UserPage1.ID,
  'Title 3',
  'Sub Title 3'
);            
UserPage3.OnNextButtonClick := @UserPage3NextButtonClick;

In the above code, UserPage1 and UserPage2 needs to show the UserPage3 when the Next button is clicked. That means that the overall order of the pages should be UserPageA, UserPage1, UserPage3, UserPageB, UserPage2 and again UserPage3.

Answer 1

I do not think it is possible to display the same page twice.

Implement the page twice. Copy over the data entered by the user between the two instances on the Back/Next button clicks.