is not an employee of a company acquired by AT&T on or after ​ unless designated as eligible by AT&T's highest ranking officer specifically responsible for human resource matters; provided, however, effective ​, this [section 2.1(e)] shall not apply to any employee who satisfies the eligibility provisions of this [section 2.1] [(a), (b), (c), and (d)])])])] and is employed by AT&T Inc. or any of its Subsidiaries on or after ​, other than an employee who is a participant in the BellSouth Corporation Supplemental Executive Retirement Plan, the AT&T Corp. Nonqualified Pension Plan, or the AT&T Corp. Excess Pension Plan.