It seems like the interviewer and the interviewee might have been talking at cross purposes? Himberg later justified the length of the process like that. So, in that context, we are specifically talking about the process before the purchase.
The last time Himberg spoke about billing starting when the camera is delivered to the customer was in the Inderes Q4 interview video at around the 17:30 mark; you can go listen for yourself and make your own interpretations 