"[IRS Chief Counsel Advice Memorandum 201742022] presented two situations ... In the first, one of the plan's investment options was an investment in limited liability company (LLC) shares where the LLC's primary function was to offer loans to the employer. The investment return to the participant was the interest on the loan paid by the employer. The LLC was not controlled directly or indirectly by the church. In the second, one of the plan's investment options was an investment in an LLC controlled either directly or indirectly by the employer, but offering loans to the employer was not the LLC's primary function."