  We answer some questions on the asymptotics of ballot walks raised in
[Personal Journal Shalosh B Ekhad and Doron Zeilberger, Apr 5, 2021; see also
arXiv:2104.01731] and prove that these models are not D-finite. This short note
demonstrates how the powerful tools developed in the last decades on lattice
paths in convex cones help us to answer some challenging problems that were out
of reach for a long time. On the way we generalize tandem walks to the family
of large tandem walks whose steps are of arbitrary length and map them
bijectively to a generalization of ballot walks in three dimensions.
