No amendment that is not germane or relevant to the provisions of the joint resolution or to the order issued under
section 904 of this title shall be in order in the Senate. For purposes of this paragraph, an amendment shall be considered to be relevant if it relates to function 050 (national defense). In the Senate, an amendment, any amendment to an amendment, or any debatable motion or appeal is debatable for not to exceed 30 minutes to be equally divided between, and controlled by, the mover and the majority leader (or their designees), except that in the event that the majority leader favors the amendment, motion, or appeal, the minority leader (or the minority leader’s designee) shall control the time in opposition to the amendment, motion, or appeal.