I guess it depends on the use case. Imagine adding an extra sentence in the second PDF, and this causes the paragraph to have 6 instead of 5 lines, and the next

I guess it depends on the use case. Imagine adding an extra sentence in the second PDF, and this causes the paragraph to have 6 instead of 5 lines, and the next paragraph begins a line further down, and the last paragraph of that page ends up in the next page, etc...