  In this work, we first introduced a generalized Wilson line gauge link that
reproduces both staple and near straight links along the light cone in
different parameter limits. We then studied the gauge-invariant bi-local
orbital angular momentum operator with such a general gauge link, in the
framework of Chen et. al. decomposition of gauge fields. At the appropriate
combination of limits, the operator reproduces both Jaffe-Manohar and Ji's
operator structure and offers a continuous analytical interpolation between the
two.
