Today I heard somebody say:
This (technology) can be the difference between life or death.
And I winced. While “life or death” can be used as an adjective (e.g., modifying “situation” or “decision”), I believe that “between X or Y” is wrong, because “between” should always be used with “and”. (Or an implied “and” , as in “between jobs”.)
Is “between X or Y” ever acceptable?