...that the passenger's first stop should be to speak with the CC and point out that they have been unable to receive the safety briefing. There must be an SOP for what the CC then have to do in this situation, surely ? I would presume it then has to be repeated manually.
On the money WHBM, both on what I should have said, and what the SOP actually is i.e. manual demo, repeated if necessary. I had taken it as read that this process had been followed.
As mentioned by Ancient Observer - the important thing is that the CAA are advised if the situation is not resolved appropriately.