sentences, (b) adding a comma and a coordinating conjunction, or (c) adding a semicolon.
Using only a comma between the two independent clauses creates a comma splice.
United States – BUSPROG.BENG.GUFF.17.1.6 – DISC.BENG.GUFF.17.1.6
United States – BUSPROG.BENG.GUFF.17.6.4 – DISC.BENG.GUFF.17.6.4