I'm not sure if this would come from the Chili Piper side or Hubspot side - so positing here to hopefully get some traction.
We use Chili Piper to schedule meetings and while there is an integartion with Chili Piper and Hubspot, it doesn't appear the Chili Piper can be used within a Chatflow.
The capability exists with other Chat platforms (Drift and Conversica) and it would be great to have the same functionality with Chili Piper and Hubspot.