No double Salary for a Minister with two portfolio.

President’s action is a cost-cutting measure, as he explains: “You cannot hold two civil servant positions, and the rule is you cannot collect salaries from any of those two positions even when you hold the positions. As long as there is a substantive minister, there is no conflict because the total
power in the Petroleum decree is harvested in the Petroleum Minister, not in the Minister of State; he has no powers under the jurisdiction of the constitution.
“The whole executive power is harvested in the President, which is why he can afford to appoint one person as Minister of Works, Housing, etc. So if the executive powers are vested in him, he can decide how those powers can be applied at any given juncture. So, in this instance, there is no conflict of interest. But I think a major conflict will arise, if for example, Kachikwu is the substantive minister and still the GMD of NNPC.