No it doesn’t work that way.
SAT and ACT are interchangeable. If you submit more than one, schools will use the concordance to determine which is higher and discard the other.
If you take only one Subject Test for a school that requires/recommends two, you will be at a significant disadvantage.
Subject Tests cover a specific area and are requested for a specific reason. Taking what is effectively a duplicate of another test you’ve taken does not meet that need.