> Contrary to what we expected (and probably contrary to what you expected as well!), masking gender had no effect on interview performance with respect to any of the scoring criteria (would advance to next round, technical ability, problem solving ability).

Or here's another hot take: the masking did not work. What if there is more gender signal in speech than just in voice pitch?

I don't see any mention of explicitly asking interviewers what gender they perceived the interviewee to be, and with what confidence.