60 min phone call
20 mins intro/background, 40 mins on a problem very similar to https://leetcode.com/problems/word-ladder/description/
Didn't get close to a working solution with a lot of hints, even a naive/brute force one. Haven't prepped at all for hard graph problems but it seems like I need to grind another few months before I'm ready
Interviewer was super polite and professional
Best of luck everyone