You say that an autonomous mobile robot is not necessarily in human-robot collaboration, especially if the connection fails, and I agree; it's more about interaction and interdependence than mere presence. A system like the BionicMobileAssistant can assist, but if the human cannot influence the task or correct the robot in case of problems, it is not a true collaboration. With us, even with mobile payment, if the money doesn't go to the right recipient, the user must intervene actively, which requires a feedback loop that goes beyond simple autonomy.