I dont know if it’s changed, but I had a 2017 Contend with the Conduct, and I had no problem using other stems with the bike. I tried several and the bolt pattern always lined up fine.
Again, maybe they changed it, but I believed its either TRP or Tektro that make it for Giant and their normal bleed kits work. I put over 3000 miles on mine and they never had an issue.
I have the bleed manual in my Google drive. I can send you if you want it.