Exclusive: Ellie Kemper Weighs In On ‘Office’ Spin-Off Series

Exclusive: Ellie Kemper Weighs In On ‘Office’ Spin-Off Series

NBC/NBCUniversal/Getty ImagesIt’s been 20 years since The Office premiered, and more than a decade since it took its final bow. But to see the stars’ easy camaraderie in their new AT&T Business commercial, well, you’d think they were simply on a lunch break from Dunder Mifflin.In the new spot — part of a multi-year campaign highlighting the provider’s connectivity solutions for small businesses — The Office’s Ellie Kemper, Angela Kinsey, Oscar N…