I like walls ceiling and trim all the same color I use matte for both walls and ceiling and then a satin or semigloss for trim . I like Healing Aloe and it looks good with white trim. The window trim is just trim treat the same as the rest of the trim

I have the same white on ceiling, trim and walls. Just semi gloss for trim. I am happy with it. The only I wish I could have gone with warm white such as Alabaster SW instead Ultra Pure White by Behr. But it still works for Florida.

I had originally planned on semi-gloss sheen for the trim and eggshell for the walls, but was recommended by a designer to use Pearl instead of semi-gloss.

Would that combination show enough separation ?

Would use the same white for ceiling and all window and door trim -- not any glossy one..