How to use Instantsearch routing with Algolia JS Helper

It’s noted in the Algolia JS Helper upgrade guide that routing has been removed from the helper, and that the job of routing now lives in Instantsearch. I’ve built most of my interface so far just using the helper, and without Instantsearch. It’s not clear to me how one uses both at the same time. So, for example, how do I take advantage of Instantsearch routing, but continue to primarily use only Algolia JS Helper for the bulk of my interface. Or if that’s not possible, how does one use the Algolia JS Helper from within an Instantsearch instance? Thanks!