Tesla Engineering interview questions

I was contacted by a university hiring representative for a battery chemistry internship, but she failed to contact me during the scheduled time for our phone. Two days later, she emailed me and we were able to reschedule for a later date, and I went through to a second phone interview with a member of the battery team. I was prepared to discuss the technical details of prior internships and chemistry in general. However, the interviewer had a very thick accent and we had a lot of difficulty communicating.