NBN HFC from Telstra Broadband cable

[Hof1]

I have Telstra broadband cable and have to move to NBN. HFC would seem the logical connection type but my address returns FTTC whenever I check on the NBN or providers sites. My neighbour has NBN HFC having moved from Telstra broadband cable. How can I be sure I will get an HFC connection. I am asking here because it is impossible to talk to an actual person within NBN or Telstra to get an answer to this question. Thanks in anticipation.