  Calabi-Yau links are specific $S^1$-fibrations over Calabi-Yau manifolds,
when the link is 7-dimensional they exhibit both Sasakian and G2 structures. In
this invited contribution to the DANGER proceedings, previous work exhaustively
computing Calabi-Yau links and selected topological properties is summarised.
Machine learning of these properties inspires new conjectures about their
computation, as well as the respective Gr\"obner bases.
