One team at Y did inventory, and a different team did payments. Both teams had ambitious (and pretty jerky) managers who wanted to control the •whole• project so they’d get credit for it when it launched. Both managers therefore wanted the other team’s side to fail.
We’d have meetings between the inventory and the payment teams where the engs would say, “We could do this!“ “Oooh, and then we could do this!” And the managers would suddenly cut in: nope nope nope, we can’t have this just •work•.