One way to get the same thing is to add separate threads and merge them later if that's fine. It might not be needed but that might be a gimmick to keep the sense of a chase alive.
Alternately, one could achieve the same with the pcs posting their actions in spoiler blocks and the GM merging their action resolutions into a single post saying what everyone can see from their personal point of view. I think it wouldn't be as cool with everyone knowing what steps were coming ahead.