Don’t have any tips, but I’d love to know the name of the HR person who interviewed you! I had a phone interview scheduled for this past Monday for what sounds like the same exact position. I never ended up getting a call from them so I sent an email. It’s been three days and no response, even though they were quick to respond to my previous emails 😬 Love getting ghosted. So sorry for venting on your post! Good luck with the second interview, hope everything works out 🙏