You cannot set up the HomePod without access to Wi-Fi and the Internet. Once configured it is possible to AirPlay from an iOS device to HomePod over an ad hoc connection that doesn't need an additional Wi-Fi access point. See the Change AirPlay settings section of Change settings for HomePod - Apple Support.
- Answered by Bryan J from Goodrich
- 19 Jan 2020
- Flag as inappropriate Answer (Can you Airplay from a Mac to Homepods without Internet)