All through Clay. Found a first degree connection of the client with a tonne of good contacts. Did a search via Sales Nav for connections of that fit our ICP. Exported into Clay (using Phantombuster), and then used Claygent to extract the relevant work history/experience stuff from their Linkedin profile. Should also mention we asked the first degree connection if it was ok to say we'd spoken (which he was cool with). Have run this approach for a couple of other clients now that have tough to reach ICPs and it's performing equally well.