Dick Wolf's One Chicago shows and Law & Order: SVU are heavy hitting procedural dramas making their respective marks in network and streaming television, but the kindred series could seriously benefit from reproducing yet another major crossover event. The individual series within the Wolf empire have produced intense crossovers in multiple two and three-parters to the sheer delight of fans of the franchises. In the momentous occasions the public service departments do get together, they take down some of the most dangerous and far-reaching criminals in epic mini-sagas.

https://screenrant.com/chicago-one-law-order-crossover-episodes-more/