WARNING: This page is about a different car, the 2020 Audi A4, 2019 Audi A4, 2018 Audi A4, and 2017 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Double Clamps
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
-- Install the clamping sleeve in the position shown.
Threaded connections are to the left.
Nuts downward.
Bolt ends must not protrude over the lower edge of the clamping sleeve.