Ten steps. Run them on Conor's phone and Amy's phone, then export the result. Nothing here is the real HomeFlow app — this exists only to find out whether the risky path actually works before any of it gets built.
For a true offline test, put the phone in aeroplane mode instead. This button only stops HomeFlow from calling out, which is a weaker test.
Export from both phones and send both files back. The file contains step results, device and browser details, and Google error codes. It contains no financial data and no tokens.