place floating tables and figures in order of appearance

place floating tables and figures in order of appearance

In my document I number tables and figures with the same counter, using
the answer to
http://stackoverflow.com/questions/3865036/using-a-single-count-for-figures-and-tables-in-latex/7771554#7771554.
I'd like them to appear in numerical order. That usually happens, but in
one case I see Figure 1.2 after Table 1.3 - probably because the Table is
smaller and happens to fit on the current page.
I could fix this by calling this Table a Figure without torturing the text
too much, but a LaTeX solution would be automatic.
If no one answers soon I can put together an MWE by playing with Figure,
Table and page lengths.
The question and answer at Order of float types on float pages seems to
deal with the opposite of what I want.